As we run in process context now we don't need worqueue to add e del from
sysfs.
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
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>
This list has much more reads than writes, so RCU makes senses here, also
it avoid deadlock against the socket lock.
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This move some checking code that was in l2cap_sock_connect() to
l2cap_chan_connect(). Thus we can invert the lock calls, i.e., call
lock_sock() before hci_dev_lock() to avoid a deadlock scenario.
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Another step of remove interrupt context from Bluetooth Core.
Use the system workqueue.
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This should simplify Bluetooth core processing a lot.
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
It's pointless, we aren't protecting anything since btusb_notify()
schedules a work to run, then all it operation happens without protection.
If protection is really needed here, we will fix it further.
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
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>
spin lock doesn't fit ok anymore on the new code based on workqueues.
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
We run everything in the same lock now. The backlog queue is useless now
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
We now run everything in process context, so the mutex lock is the best
option. But in some places we still need the bh_lock_sock()
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
L2CAP timers also need to run in process context. As the works in l2cap
are small we are using the system worqueue.
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
It doesn't really touch any sensitive information about hdev. So no need
to lock here.
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
Bluetooth rx task runs now in a workqueue, so it a good approach run any
timer that share locking with process context code also in a workqueue.
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
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>
Make sure that code match exactly what comment says about pre 1.2
bluetooth version. Since this is HCI detail lmp_ver changed to hci_ver.
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>
Use bluetooth names instead of BT SIG assigned numbers
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>
Check for hci_ver instead of lmp_ver
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>
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>
This patch adds the parameter struct and the command complete event
handler to the LE Set Scan Parameter HCI command.
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>
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>
Upstream Code Aurora function with minor trivial fixes.
Origin: git://codeaurora.org/kernel/msm.git
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>
The blkcipher must be freed to avoid memory leak.
Signed-off-by: Brian Gix <bgix@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Some MITM scenarios require handling of the User Passkey Request event,
by querying the user, and passing the response back.
Signed-off-by: Brian Gix <bgix@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
For some MITM protection pairing scenarios, the user is
required to enter or accept a 6 digit passkey.
Signed-off-by: Brian Gix <bgix@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
I did this as a part of a testing course at university, but it might be
useful upstream as well.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
Low Energy (LE) pairing responses must be recognized and handled
differently from BR/EDR pairing responses. BR/EDR responses are
handled via HCI commands by the LMP layer, and LE responses are
handled by the Host.
Signed-off-by: Brian Gix <bgix@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
There are 4 possible User Responses to pairing requests,
and they all share the same checks and handling. This
restructures the handling of the two Confirm responses
in preperation for the second two.
Signed-off-by: Brian Gix <bgix@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
We cannot call module_put(THIS_MODULE) if this is our last reference. Otherwise,
this call may cleanup our module before it returns.
Gladly, the kthread API provides a simple wrapper for us. So lets use
module_put_and_exit() to avoid a race condition with the module cleanup code.
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>
We cannot call module_put(THIS_MODULE) if this is our last reference. Otherwise,
this call may cleanup our module before it returns.
Gladly, the kthread API provides a simple wrapper for us. So lets use
module_put_and_exit() to avoid a race condition with the module cleanup code.
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>
Make __l2cap_global_chan_by_addr similar to other find functions.
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This make it easier to see what is the real reason for loop to exit.
skb_queue_next return valid skb or garbage, not NULL.
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Make it easier to see what is loop break condition.
skb_queue_next return valid skb or garbage, not NULL.
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Due to ERTM reliability L2CAP channel needs to be disconnected if
adding to srej list failed.
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The mgmt_start_discovery command contains the type of discovery that
should be started so this should be passed to the start_discovery
function. This patch doesn't yet add any action depending on the type of
the requested discovery.
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>
The command complete event was completely missing for this command.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The management protocol uses a single byte for error codes (aka command
status). In some places this value is directly copied from HCI and in
other a POSIX error number is used. This makes it impossible for
user-space to uniquily decipher the meaning of an error.
To solve this issue a new mgmt-specific set of error codes is added
along with a conversion table for HCI status values.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
When the adapter state is already what is requested it's more friendly
to user-space to simply report success than to send a EALREADY error
message.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
When possible cmd_complete should be returned instead of cmd_status
since it contains the remote address (this helps user-space track what
exactly failed).
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The kernel needs to know whether it should connect to a device over
BR/EDR or over LE. This is particularly important in the future when
dual-mode device may be connectable also over LE. It is also important
if/when we decide to move the LE advertisement cache from the kernel
into user-space. Adding the type to the mgmt command also ensures
conformance with the latest mgmt API spec.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This patches creates mgmt_stop_discovery_failed() which removes
pending MGMT_OP_STOP_DISCOVERY commands and sends proper command
status events.
This patch also fixes the MGMT_OP_STOP_DISCOVERY command leak in
case cancel inquiry fails.
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>
This patch renames the function mgmt_inquiry_failed() to
mgmt_start_discovery_failed(). This function is more related
to MGMT_OP_START_DISCOVERY command handling than to inquiry.
Besides, this functions will be reused by LE based discovery
procedures in case of failure.
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>
Some incomming connections needs to increase the security level by
requesting encryption for example (HID keyboard case). This change allows
the userspace to change it through setsockopt with defer_setup enabled.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
rename to l2cap_chan_check_security() to make it consistent with other
l2cap_exported functions. This function will be exported in a later
commit.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Since disconnecting may fail the status needs to be communicated to user
space. This also updates the implementation to match the latest mgmt API
specification.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Since the command can fail we need to have a proper response with the
remote address and a failure status for it. This also updates it to
conform to the latest mgmt API spec.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The hci_conn callbacks are called with the hci_dev lock already held so
no locking should be attempted in them.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
It's necessary to know the distinction between public and random LE
addresses so the mgmt interface also needs to distinguish between them.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Now that pending commands are hci_dev specific there's no need to check
whether a command matches hci_dev when iterating through them.
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>
For consistency the integer type should be u16 and not __u16.
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>
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>
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>
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>
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>
This patch adds address type info (typically BR/EDR vs LE) to management
messages that need this. This also ensures conformance to the latest
management API specification.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
We should return a ENETDOWN status response if the adapter is powered
off (i.e. the HCI_UP flag isn't set).
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
There's no need to deal with mgmt_pending_cmd when blocking and
unblocking devices since these actions are synchronous.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
A proper mgmt_command_status should be returned to user-space if either
discoverable or connectable enabling fails.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
By using periodic inquiry command we're not able to detect correctly
when the controller has started inquiry.
Today we have this workaround in inquiry result event handler
to set the HCI_INQUIRY flag when it sees the first inquiry result
event. This workaround isn't enough because the device may be
performing an inquiry but the HCI_INQUIRY flag is not set. For
instance, if there is no device in range, no inquiry result event
is generated, consequently, the HCI_INQUIRY flags isn't set when
it should so.
We rely on HCI_INQUIRY flag to implement the discovery procedure
properly. So, as we aren't able to clear/set the HCI_INQUIRY flag
in a reliable manner, periodic inquiry events shouldn't change
the HCI_INQUIRY flag.
Thus, due to that issue and in order to keep compatibility with
userspace, periodic inquiry events shouldn't send mgmt discovering
events.
In future, we might track if periodic inquiry is enabled or not.
By tracking this state we'll be able to do some improvements in
Discovery such as failing MGMT_OP_START_DISCOVERY command in case
periodic inquiry is on. We can also send no mgmt_device_found
event if periodic inquiry is on.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
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>
Add parsing Extended Flow Specification in L2CAP Config Response.
Based upon haijun.liu <haijun.liu@atheros.com> series of patches
(sent Sun, 22 Aug 2010)
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>
This patch adds a new label to hci_cc_write_scan_enable to avoid
unnecessary indentation. This will be convenient especially when new
code for the discoverable timeout gets added.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
When an adapter gets powered off or is removed any pending commands
should receive a ENETDOWN or ENODEV status response.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
AMP channels can be moved between BR/EDR and AMP controllers using a
sequence of signals. Every attempted channel move involves a series of
four signals:
Move Initiator Move Responder
| |
| Move Channel Request |
| ----------------------------> |
| |
| Move Channel Response |
| <---------------------------- |
| |
| Move Channel Confirm |
| ----------------------------> |
| |
| Move Channel Confirm Response |
| <---------------------------- |
All four signals are sent even if the move fails.
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>
The A2MP fixed channel bit is only set when high-speed mode is enabled.
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>
Each channel has a policy to require BR/EDR (the default),
prefer BR/EDR, or prefer AMP.
Check for valid policy value and L2CAP mode.
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>
tx_win_max is initialized during L2CAP configuration phase. For fixed
channels (e.g. A2MP) we want to have it initialized when channel is
created.
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>
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>
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>
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>
Calling module_put(THIS_MODULE) is *never* safe when we cannot go sure that we
own at least two references. This is because the call may unload our module
before it returns and then the "return" will jump into invalid memory.
Gladly, module.h provides a wrapper for kthread-users: module_put_and_exit().
This puts our module and then exits the kthread without returning to the module.
This patch fixes the hidp kthread to use this wrapper instead of manually
freeing its own reference. See nfsd or lockd for other kthreads using this.
Calling __module_get() inside the kthread is safe as the hidp module will always
wait until the kthread sets "waiting_for_startup" to 0.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The HCI_MGMT flag should only be set when user space requests the full
controller information. This way we avoid potential issues with setting
change events ariving before the actual read_controller_info command
finishes.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
This was triggered by turning off encryption on ACL link when rfcomm
was using high security. rfcomm_security_cfm (which is called from rx
task) was closing DLC and this involves sending disconnect message
(and locking socket).
Move closing DLC to rfcomm_process_dlcs and only flag DLC for closure
in rfcomm_security_cfm.
BUG: sleeping function called from invalid context at net/core/sock.c:2032
in_atomic(): 1, irqs_disabled(): 0, pid: 1788, name: kworker/0:3
[<c0068a08>] (unwind_backtrace+0x0/0x108) from [<c05e25dc>] (dump_stack+0x20/0x24)
[<c05e25dc>] (dump_stack+0x20/0x24) from [<c0087ba8>] (__might_sleep+0x110/0x12c)
[<c0087ba8>] (__might_sleep+0x110/0x12c) from [<c04801d8>] (lock_sock_nested+0x2c/0x64)
[<c04801d8>] (lock_sock_nested+0x2c/0x64) from [<c05670c8>] (l2cap_sock_sendmsg+0x58/0xcc)
[<c05670c8>] (l2cap_sock_sendmsg+0x58/0xcc) from [<c047cf6c>] (sock_sendmsg+0xb0/0xd0)
[<c047cf6c>] (sock_sendmsg+0xb0/0xd0) from [<c047cfc8>] (kernel_sendmsg+0x3c/0x44)
[<c047cfc8>] (kernel_sendmsg+0x3c/0x44) from [<c056b0e8>] (rfcomm_send_frame+0x50/0x58)
[<c056b0e8>] (rfcomm_send_frame+0x50/0x58) from [<c056b168>] (rfcomm_send_disc+0x78/0x80)
[<c056b168>] (rfcomm_send_disc+0x78/0x80) from [<c056b9f4>] (__rfcomm_dlc_close+0x2d0/0x2fc)
[<c056b9f4>] (__rfcomm_dlc_close+0x2d0/0x2fc) from [<c056bbac>] (rfcomm_security_cfm+0x140/0x1e0)
[<c056bbac>] (rfcomm_security_cfm+0x140/0x1e0) from [<c0555ec0>] (hci_event_packet+0x1ce8/0x4d84)
[<c0555ec0>] (hci_event_packet+0x1ce8/0x4d84) from [<c0550380>] (hci_rx_task+0x1d0/0x2d0)
[<c0550380>] (hci_rx_task+0x1d0/0x2d0) from [<c009ee04>] (tasklet_action+0x138/0x1e4)
[<c009ee04>] (tasklet_action+0x138/0x1e4) from [<c009f21c>] (__do_softirq+0xcc/0x274)
[<c009f21c>] (__do_softirq+0xcc/0x274) from [<c009f6c0>] (do_softirq+0x60/0x6c)
[<c009f6c0>] (do_softirq+0x60/0x6c) from [<c009f794>] (local_bh_enable_ip+0xc8/0xd4)
[<c009f794>] (local_bh_enable_ip+0xc8/0xd4) from [<c05e5804>] (_raw_spin_unlock_bh+0x48/0x4c)
[<c05e5804>] (_raw_spin_unlock_bh+0x48/0x4c) from [<c040d470>] (data_from_chip+0xf4/0xaec)
[<c040d470>] (data_from_chip+0xf4/0xaec) from [<c04136c0>] (send_skb_to_core+0x40/0x178)
[<c04136c0>] (send_skb_to_core+0x40/0x178) from [<c04139f4>] (cg2900_hu_receive+0x15c/0x2d0)
[<c04139f4>] (cg2900_hu_receive+0x15c/0x2d0) from [<c0414cb8>] (hci_uart_tty_receive+0x74/0xa0)
[<c0414cb8>] (hci_uart_tty_receive+0x74/0xa0) from [<c02cbd9c>] (flush_to_ldisc+0x188/0x198)
[<c02cbd9c>] (flush_to_ldisc+0x188/0x198) from [<c00b2774>] (process_one_work+0x144/0x4b8)
[<c00b2774>] (process_one_work+0x144/0x4b8) from [<c00b2e8c>] (worker_thread+0x198/0x468)
[<c00b2e8c>] (worker_thread+0x198/0x468) from [<c00b9bc8>] (kthread+0x98/0xa0)
[<c00b9bc8>] (kthread+0x98/0xa0) from [<c0061744>] (kernel_thread_exit+0x0/0x8)
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This patch adds the necessary code to send proper command status or
command complete events to the start/stop discovery management commands.
Before this patch these events were completely missing.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This uses SO_PRIORITY to set the skbuffer priority field
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
l2cap_set_timer function prints sk instead of chan pointer.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
make code readable by removing magic numbers
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
Remove old tasklets and replace by workqueue. To avoid reentrancy (which
tasklets always avoid) we use the system_nrt_wq.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Forward error codes from tty core to the rfcomm_init caller instead of using
generic -1 errors.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Timers set by __set_chan_timer() should use miliseconds instead of
jiffies. Commit 942ecc9c46 updated
l2cap_set_timer() so it expects timeout to be specified in msecs
instead of jiffies. This makes timeouts unreliable when CONFIG_HZ
is not set to 1000.
Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (47 commits)
forcedeth: fix a few sparse warnings (variable shadowing)
forcedeth: Improve stats counters
forcedeth: remove unneeded stats updates
forcedeth: Acknowledge only interrupts that are being processed
forcedeth: fix race when unloading module
MAINTAINERS/rds: update maintainer
wanrouter: Remove kernel_lock annotations
usbnet: fix oops in usbnet_start_xmit
ixgbe: Fix compile for kernel without CONFIG_PCI_IOV defined
etherh: Add MAINTAINERS entry for etherh
bonding: comparing a u8 with -1 is always false
sky2: fix regression on Yukon Optima
netlink: clarify attribute length check documentation
netlink: validate NLA_MSECS length
i825xx:xscale:8390:freescale: Fix Kconfig dependancies
macvlan: receive multicast with local address
tg3: Update version to 3.121
tg3: Eliminate timer race with reset_task
tg3: Schedule at most one tg3_reset_task run
tg3: Obtain PCI function number from device
...
These files are non modular, but need to export symbols using
the macros now living in export.h -- call out the include so
that things won't break when we remove the implicit presence
of module.h from everywhere.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
With calls to modular infrastructure, these files really
needs the full module.h header. Call it out so some of the
cleanups of implicit and unrequired includes elsewhere can be
cleaned up.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
The HCI_MGMT flag should only be set when user space requests the full
controller information. This way we avoid potential issues with setting
change events ariving before the actual read_controller_info command
finishes.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
The Bluetooth stack has internal connection handlers for all of the various
Bluetooth protocols, and unfortunately, they are currently lacking the LSM
hooks found in the core network stack's connection handlers. I say
unfortunately, because this can cause problems for users who have have an
LSM enabled and are using certain Bluetooth devices. See one problem
report below:
* http://bugzilla.redhat.com/show_bug.cgi?id=741703
In order to keep things simple at this point in time, this patch fixes the
problem by cloning the parent socket's LSM attributes to the newly created
child socket. If we decide we need a more elaborate LSM marking mechanism
for Bluetooth (I somewhat doubt this) we can always revisit this decision
in the future.
Reported-by: James M. Cape <jcape@ignore-your.tv>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add parsing Extended Flow Specification option in L2CAP Config Request
Based upon haijun.liu <haijun.liu@atheros.com> series of patches
(sent Sun, 22 Aug 2010)
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Fix max_pdu_size calculationin for RFC. Change magic number to human readable
defines.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Remove magic numbers for FCS, SDU LEN and PSM LEN
when calculating packet payload.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Adds support for extended sequence numbers found in
extended control fields.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
There are three different Control Field formats: the Standard Control
Field, the Enhanced Control Field, and the Extended Control Field.
Patch adds function to handle all those fields seamlessly.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
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>
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>
This was triggered by turning off encryption on ACL link when rfcomm
was using high security. rfcomm_security_cfm (which is called from rx
task) was closing DLC and this involves sending disconnect message
(and locking socket).
Move closing DLC to rfcomm_process_dlcs and only flag DLC for closure
in rfcomm_security_cfm.
BUG: sleeping function called from invalid context at net/core/sock.c:2032
in_atomic(): 1, irqs_disabled(): 0, pid: 1788, name: kworker/0:3
[<c0068a08>] (unwind_backtrace+0x0/0x108) from [<c05e25dc>] (dump_stack+0x20/0x24)
[<c05e25dc>] (dump_stack+0x20/0x24) from [<c0087ba8>] (__might_sleep+0x110/0x12c)
[<c0087ba8>] (__might_sleep+0x110/0x12c) from [<c04801d8>] (lock_sock_nested+0x2c/0x64)
[<c04801d8>] (lock_sock_nested+0x2c/0x64) from [<c05670c8>] (l2cap_sock_sendmsg+0x58/0xcc)
[<c05670c8>] (l2cap_sock_sendmsg+0x58/0xcc) from [<c047cf6c>] (sock_sendmsg+0xb0/0xd0)
[<c047cf6c>] (sock_sendmsg+0xb0/0xd0) from [<c047cfc8>] (kernel_sendmsg+0x3c/0x44)
[<c047cfc8>] (kernel_sendmsg+0x3c/0x44) from [<c056b0e8>] (rfcomm_send_frame+0x50/0x58)
[<c056b0e8>] (rfcomm_send_frame+0x50/0x58) from [<c056b168>] (rfcomm_send_disc+0x78/0x80)
[<c056b168>] (rfcomm_send_disc+0x78/0x80) from [<c056b9f4>] (__rfcomm_dlc_close+0x2d0/0x2fc)
[<c056b9f4>] (__rfcomm_dlc_close+0x2d0/0x2fc) from [<c056bbac>] (rfcomm_security_cfm+0x140/0x1e0)
[<c056bbac>] (rfcomm_security_cfm+0x140/0x1e0) from [<c0555ec0>] (hci_event_packet+0x1ce8/0x4d84)
[<c0555ec0>] (hci_event_packet+0x1ce8/0x4d84) from [<c0550380>] (hci_rx_task+0x1d0/0x2d0)
[<c0550380>] (hci_rx_task+0x1d0/0x2d0) from [<c009ee04>] (tasklet_action+0x138/0x1e4)
[<c009ee04>] (tasklet_action+0x138/0x1e4) from [<c009f21c>] (__do_softirq+0xcc/0x274)
[<c009f21c>] (__do_softirq+0xcc/0x274) from [<c009f6c0>] (do_softirq+0x60/0x6c)
[<c009f6c0>] (do_softirq+0x60/0x6c) from [<c009f794>] (local_bh_enable_ip+0xc8/0xd4)
[<c009f794>] (local_bh_enable_ip+0xc8/0xd4) from [<c05e5804>] (_raw_spin_unlock_bh+0x48/0x4c)
[<c05e5804>] (_raw_spin_unlock_bh+0x48/0x4c) from [<c040d470>] (data_from_chip+0xf4/0xaec)
[<c040d470>] (data_from_chip+0xf4/0xaec) from [<c04136c0>] (send_skb_to_core+0x40/0x178)
[<c04136c0>] (send_skb_to_core+0x40/0x178) from [<c04139f4>] (cg2900_hu_receive+0x15c/0x2d0)
[<c04139f4>] (cg2900_hu_receive+0x15c/0x2d0) from [<c0414cb8>] (hci_uart_tty_receive+0x74/0xa0)
[<c0414cb8>] (hci_uart_tty_receive+0x74/0xa0) from [<c02cbd9c>] (flush_to_ldisc+0x188/0x198)
[<c02cbd9c>] (flush_to_ldisc+0x188/0x198) from [<c00b2774>] (process_one_work+0x144/0x4b8)
[<c00b2774>] (process_one_work+0x144/0x4b8) from [<c00b2e8c>] (worker_thread+0x198/0x468)
[<c00b2e8c>] (worker_thread+0x198/0x468) from [<c00b9bc8>] (kthread+0x98/0xa0)
[<c00b9bc8>] (kthread+0x98/0xa0) from [<c0061744>] (kernel_thread_exit+0x0/0x8)
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Implementation of Read Local AMP Info Command
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Recalculate length of L2CAP header based on Control field length.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Handle POLL (P) bit in L2CAP ERTM using information about control field type.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Handle final (F) bit in L2CAP using information about control field type.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Check frame function uses now information about control field type.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
L2CAP ERTM txseq calculation uses now information about control field type.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
reqseq calculation uses now information about control field type.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Segmentation and Reassembly (SAR) occupies different windows in standard and
extended control fields. Convert hardcoded masks to relative ones and use shift
to access SAR bits.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Supervisory bits occupy different windows in standard / extended control
fields. Convert hardcoded masks to relative ones and use shift to access
S-bit window.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Adds support for extended window size (EWS) config option. We enable EWS
feature in L2CAP Info RSP when hs enabled. EWS option is included in L2CAP
Config Req if tx_win (which is set via socket) bigger then standard default
value (63) && hs enabled && remote side supports EWS feature.
Using EWS selects extended control field in L2CAP.
Code partly based on Qualcomm and Atheros patches sent upstream a year ago.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
role_switch variable inside l2cap_chan is a logical one and can
be easily converted to flag
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
force_active variable inside l2cap_chan is a logical one and can
be easily converted to flag
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
force_reliable variable inside l2cap_chan is a logical one and can
be easily converted to flag
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
flushable variable inside l2cap_chan is a logical one and can
be easily converted to flag. Added flags in l2cap_chan structure.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
hidp_get_connection() makes more sense because we hold a reference to the
connection inside this function.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Claim device lock to safely enumerate hci connection list and bump
hci connection proxy device ref count simultaneously.
This patch incorporates David Herrmann's fix to prevent adding an
HID device when the hci connection no longer exists.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Current hidp driver purges the in/out queue on HID shutdown, but does
not prevent further I/O. If a driver uses hidp_output_raw_report or
hidp_get_raw_report during shutdown, the driver hangs for 5 or 10
seconds per call until it gets a timeout.
That is, if the output queue of an HID driver has 10 messages pending,
it will take 50s until hid_destroy_device() will return. The
hidp_session_sem semaphore is held during shutdown so no other HID
device may be added/removed during this time.
This patch makes hidp_output_raw_report and hidp_get_raw_report fail if
session->terminate is true. Also hidp_session will wakeup all current
calls to these functions to cancel the current operations.
We already purge the current I/O queues on hidp_stop(), so this data loss
does not change the behaviour of the HID drivers.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Add enable_hs kernel parameter. L2CAP_FEAT_EXT_FLOW depends on it.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
There is no reason to treat the first advertising entry differently
from the potential other ones. Besides, the current implementation
can easily leads to typos.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Checking conn->pending_sec_level if there is no connection leads to potential
null pointer dereference. Don't process pin_code_request_event at all if no
connection exists.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The new connection parameters now match the recommended values for
Proximity and Health Thermometer profiles. The previous values were
ramdomly chosen, and are either too low or too high for most cases.
New values:
Scan Interval: 60 ms
Scan Window: 30 ms
Minimum Connection Interval: 50 ms
Maximum Connection Interval: 70 ms
Supervision Timeout: 420 ms
See "Table 5.2: Recommended Scan Interval and Scan Window Values" and
"Table 5.3: Recommended Connection Interval Values" for both profiles
for details. Note that the "fast connection" parameters were chosen,
because we do not support yet dynamically changing these parameters from
initiator side.
Additionally, the Proximity profile recommends (section "4.4 Alert on
Link Loss"):
"It is recommended that the Link Supervision Timeout (LSTO) is set to 6x
the connection interval."
Minimum_CE_Length and Maximum_CE_Length were also changed from 0x0001 to
0x0000 because they are informational and optional, and old value was
not reflecting reality.
Signed-off-by: Anderson Lizardo <anderson.lizardo@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Use sk_buff fragment capabilities to link together incoming skbs
instead of allocating a new skb for reassembly and copying.
The new reassembly code works equally well for ERTM and streaming
mode, so there is now one reassembly function instead of two.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
ERTM reassembly will be more efficient when skbs are linked together
rather than copying every incoming data byte. The existing stream recv
function assumes skbs are linear, so it needs to know how to handle
fragments before reassembly is changed.
bt_sock_recvmsg() already handles fragmented skbs.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Fragmented skbs are only encountered when receiving ERTM or streaming
mode L2CAP data. BNEP, CMTP, HIDP, and RFCOMM generally use basic
mode, but they need to handle fragments without crashing.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
l2cap_create_iframe_pdu is only used in l2cap_core.c
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The mgmt_device_found event will be used to report LE devices found
during discovery procedure. Since LE advertising reports events
doesn't have class of device information, we need to check if
'dev_class' is not NULL before copying it.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This patch reduces the critial region (protected by hdev->lock) in
hci_cc_le_set_scan_enable(). This way, only really required code is
synchronized.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This patch fixes wrong memcpy size when copying rand value to
HCI_OP_LE_START_ENC command.
The compiler pretends that the array parameter was declared as a pointer
and sizeof reports the size of the pointer. [1]
[1] http://www.c-faq.com/aryptr/aryparmsize.html
Signed-off-by: Anderson Briglia <anderson.briglia@openbossa.org>
Signed-off-by: Anderson Lizardo <anderson.lizardo@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
For now, only the LTK is properly supported. We are able to receive
and generate the other types of keys, but we are not able to use
them. So it's better not request them to be distributed.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
For slave initiated security, we should set a default security level,
for now BT_SECURITY_MEDIUM.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This reverts commit 5a0a8b4974.
If we use separate messages and list for SMP specific keys we can
simplify the code.
Conflicts:
net/bluetooth/mgmt.c
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
When receiving a security request from the remote device we should find
if there is already a LTK associated with the remote device, if found
we should use it to encrypt the link.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Until we support any pairing method (Passkey Entry, OOB) that gives
MITM protection we shouldn't send that we have MITM protection.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
This lifts the requirement of 16 digits pin codes when pairing
with devices that do not support SSP when using the mgmt interface.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The HIGH security level requires a 16 digit pin code for non-SSP
bondings. Sometimes this requirement is not acceptable and we still
want protection againts MITM attacks (which is something that the
MEDIUM security level doesn't provide), for that we should allow
another way to request authentication without using the HIGH security
level.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The function crypto_blkcipher_setkey() called by smp_e()
can sleep, so all the crypto work has to be moved to
hci_dev workqueue.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
During setup the host initializes all HID reports. Some devices do not
support this. If this quirk is set, we skip the initialization.
See also usbhid_init_reports() for this quirk.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Add LE link type as known connection type for debugfs stringizing
output.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Add command to management interface for enabling/disabling the
fast connectable mode.
Signed-off-by: Antti Julku <antti.julku@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
One piece of information that was lost when using the mgmt interface,
was the type of the connection. Using HCI events we used to know
the type of the connection based on the type of the event, e.g.
HCI_LE_Connection_Complete for LE links.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
When doing the pairing procedure we won't have an associated
socket, but we still have to do the SMP negotiation. This
adds support for encrypting the link and exchanging keys.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Using the advertising cache we are able to infer the type
of the remote device, and so trigger pairing over the correct
link type.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Add HCI_CONN_LE_SMP_PEND flag to indicate that SMP is pending
for that connection. This allows to have information that an SMP
procedure is going on for that connection.
We use the HCI_CONN_ENCRYPT_PEND to indicate that encryption
(HCI_LE_Start_Encryption) is pending for that connection.
While a SMP procedure is going on we hold an reference to the
connection, to avoid disconnections.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Each time a SMP command is enqueued, we reset the SMP timer,
this way we follow exactly what the spec mandates:
"The Security Manager Timer shall be reset when an L2CAP SMP command is
queued for transmission." Vol. 3, Part H, Section 3.4
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
The checks for HCI_INQUIRY and HCI_MGMT were in the wrong order,
so that second scans always failed.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Once the session thread is running, cleanup must be handled
by the session thread only.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
When an hidp connection is added for a boot protocol input
device, don't release a device reference that was never
acquired. The device reference is acquired when the session
is linked to the session list (which hasn't happened yet when
hidp_setup_input is called).
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
When an hidp connection is added for a boot protocol input
device, only free the allocated device if device registration fails.
Subsequent failures should only unregister the device (the input
device api documents that unregister will also free the allocated
device).
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Free the cached HID report descriptor on thread terminate.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Once the session thread is running, cleanup must be
handled by the session thread only.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Commit fada4ac339 introduced the usage of kthread API.
kthread_stop is a blocking function which returns only when
the thread exits. In this case, the thread can't exit because it's
waiting for the write lock, which is being held by cmtp_del_connection()
which is waiting for the thread to exit -- deadlock.
Revert cmtp_reset_ctr to its original behavior: non-blocking signalling
for the session to terminate.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Commit f4d7cd4a4c introduced the usage of kthread API.
kthread_stop is a blocking function which returns only when
the thread exits. In this case, the thread can't exit because it's
waiting for the write lock, which is being held by bnep_del_connection()
which is waiting for the thread to exit -- deadlock.
Use atomic_t/wake_up_process instead to signal to the thread to exit.
Signed-off-by: Jaikumar Ganesh <jaikumar@google.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
L2CAP connection timeout needs to be assigned as miliseconds
and not as jiffies.
Signed-off-by: Chen Ganir <chen.ganir@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Fix race condition which can result in missing wakeup during
l2cap socket shutdown.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Fix race condition which can result in missing the wakeup intended
to stop the session thread.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Fix race condition which can result in missing the wakeup intended
to stop the session thread.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Fix race conditions which can cause lost wakeups (or missed signals)
while waiting to accept a sco socket connection.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Fix race conditions which can cause lost wakeups (or misssed signals)
while waiting to accept an l2cap socket connection.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Fix race conditions which can cause lost wakeups while waiting
for sock state to change.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Fix race conditions which can cause lost wakeups (or missed
signals) while waiting to accept an rfcomm socket connection.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Removed superfluous event handling which was used to signal
that the rfcomm kthread had been woken. This appears to have been
used to prevent lost wakeups. Correctly ordering when the task
state is set to TASK_INTERRUPTIBLE is sufficient to prevent lost wakeups.
To prevent wakeups which occurred prior to initially setting
TASK_INTERRUPTIBLE from being lost, the main work of the thread loop -
rfcomm_process_sessions() - is performed prior to sleeping.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
After the last patch, We are left in a state in which only drivers calling
ether_setup have IFF_TX_SKB_SHARING set (we assume that drivers touching real
hardware call ether_setup for their net_devices and don't hold any state in
their skbs. There are a handful of drivers that violate this assumption of
course, and need to be fixed up. This patch identifies those drivers, and marks
them as not being able to support the safe transmission of skbs by clearning the
IFF_TX_SKB_SHARING flag in priv_flags
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Karsten Keil <isdn@linux-pingi.de>
CC: "David S. Miller" <davem@davemloft.net>
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Patrick McHardy <kaber@trash.net>
CC: Krzysztof Halasa <khc@pm.waw.pl>
CC: "John W. Linville" <linville@tuxdriver.com>
CC: Greg Kroah-Hartman <gregkh@suse.de>
CC: Marcel Holtmann <marcel@holtmann.org>
CC: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Another regression fix considering incomming l2cap connections with
defer_setup enabled. In situations when incomming connection is
extracted with l2cap_sock_accept, it's bt_sock info will have
'parent' member zerroed, but 'parent' may be used unconditionally
in l2cap_conn_start() and l2cap_security_cfm() when defer_setup
is enabled.
Backtrace:
[<bf02d5ac>] (l2cap_security_cfm+0x0/0x2ac [bluetooth]) from [<bf01f01c>] (hci_event_pac
ket+0xc2c/0x4aa4 [bluetooth])
[<bf01e3f0>] (hci_event_packet+0x0/0x4aa4 [bluetooth]) from [<bf01a844>] (hci_rx_task+0x
cc/0x27c [bluetooth])
[<bf01a778>] (hci_rx_task+0x0/0x27c [bluetooth]) from [<c008eee4>] (tasklet_action+0xa0/
0x15c)
[<c008ee44>] (tasklet_action+0x0/0x15c) from [<c008f38c>] (__do_softirq+0x98/0x130)
r7:00000101 r6:00000018 r5:00000001 r4:efc46000
[<c008f2f4>] (__do_softirq+0x0/0x130) from [<c008f524>] (do_softirq+0x4c/0x58)
[<c008f4d8>] (do_softirq+0x0/0x58) from [<c008f5e0>] (run_ksoftirqd+0xb0/0x1b4)
r4:efc46000 r3:00000001
[<c008f530>] (run_ksoftirqd+0x0/0x1b4) from [<c009f2a8>] (kthread+0x84/0x8c)
r7:00000000 r6:c008f530 r5:efc47fc4 r4:efc41f08
[<c009f224>] (kthread+0x0/0x8c) from [<c008cc84>] (do_exit+0x0/0x5f0)
Signed-off-by: Ilia Kolomisnky <iliak@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Caused by the following commit, partially revert it.
commit 9fa7e4f76f
Author: Gustavo F. Padovan <padovan@profusion.mobi>
Date: Thu Jun 30 16:11:30 2011 -0300
Bluetooth: Fix regression with incoming L2CAP connections
PTS test A2DP/SRC/SRC_SET/TC_SRC_SET_BV_02_I revealed that
( probably after the df3c3931e commit ) the l2cap connection
could not be established in case when the "Auth Complete" HCI
event does not arive before the initiator send "Configuration
request", in which case l2cap replies with "Command rejected"
since the channel is still in BT_CONNECT2 state.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
There can 3 reasons for the "command reject" reply produced
by the stack. Each such reply should be accompanied by the
relevand data ( as defined in spec. ). Currently there is one
instance of "command reject" reply with reason "invalid cid"
wich is fixed. Also, added clean-up definitions related to the
"command reject" replies.
Signed-off-by: Ilia Kolomisnky <iliak@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This will be useful when userspace wants to restrict some kinds of
operations based on the length of the key size used to encrypt the
link.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
As the key format has changed to something that has a dynamic size,
the way that keys are received and sent must be changed.
The structure fields order is changed to make the parsing of the
information received from the Management Interface easier.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Now that it's possible that the exchanged key is present in
the link key list, we may be able to estabilish security with
an already existing key, without need to perform any SMP
procedure.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
With this we can use only one place to store all keys, without
need to use a field in the connection structure for this
purpose.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Now when the LTK is received from the remote or generated it is stored,
so it can later be used.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Before implementing SM key distribution, the pairing features
exchange must be better negotiated, taking into account some
features of the host and connection requirements.
If we are in the "not pairable" state, it makes no sense to
exchange any key. This allows for simplification of the key
negociation method.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Now that we have methods to finding keys by its parameters we can
reject an encryption request if the key isn't found.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
This adds support for generating and distributing all the keys
specified in the third phase of SMP.
This will make possible to re-establish secure connections, resolve
private addresses and sign commands.
For now, the values generated are random.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The ERTM receive buffer is now handled in a way that does not require
the busy queue and the associated polling code.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This change moves most L2CAP ERTM receive buffer handling out of the
L2CAP core and in to the socket code. It's up to the higher layer
(the socket code, in this case) to tell the core when its buffer is
full or has space available. The recv op should always accept
incoming ERTM data or else the connection will go down.
Within the socket layer, an skb that does not fit in the socket
receive buffer will be temporarily stored. When the socket is read
from, that skb will be placed in the receive buffer if possible. Once
adequate buffer space becomes available, the L2CAP core is informed
and the ERTM local busy state is cleared.
Receive buffer management for non-ERTM modes is unchanged.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The local busy state is entered and exited based on buffer status in
the socket layer (or other upper layer). This change is in
preparation for general buffer status reports from the socket layer,
which will then be used to change the local busy status.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
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>
This patch adds a new module parameter to enable/disable host LE
support. By default host LE support is disabled.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This patch adds a handler to Write LE Host Supported command complete
events. Once this commands has completed successfully, we should
read the extended LMP features and update the extfeatures field in
hci_dev.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This new field holds the extended LMP features value. Some LE
mechanism such as discovery procedure needs to read the extended
LMP features to work properly.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Even when the received tx_seq is expected, the frame still needs to be
dropped if the TX window is exceeded or the receiver is in the local
busy state.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Add a local logging function to emit bluetooth specific
messages. Using vsprintf extension %pV saves code/text
space.
Convert the current BT_INFO and BT_ERR macros to use bt_printk.
Remove __func__ from BT_ERR macro (and the uses).
Prefix "Bluetooth: " to BT_ERR
Remove __func__ from BT_DBG as function can be prefixed when
using dynamic_debug.
With allyesconfig:
text data bss dec hex filename
129956 8632 36096 174684 2aa5c drivers/bluetooth/built-in.o.new2
134402 8632 36064 179098 2bb9a drivers/bluetooth/built-in.o.old
14778 1012 3408 19198 4afe net/bluetooth/bnep/built-in.o.new2
15067 1012 3408 19487 4c1f net/bluetooth/bnep/built-in.o.old
346595 19163 86080 451838 6e4fe net/bluetooth/built-in.o.new2
353751 19163 86064 458978 700e2 net/bluetooth/built-in.o.old
18483 1172 4264 23919 5d6f net/bluetooth/cmtp/built-in.o.new2
18927 1172 4264 24363 5f2b net/bluetooth/cmtp/built-in.o.old
19237 1172 5152 25561 63d9 net/bluetooth/hidp/built-in.o.new2
19581 1172 5152 25905 6531 net/bluetooth/hidp/built-in.o.old
59461 3884 14464 77809 12ff1 net/bluetooth/rfcomm/built-in.o.new2
61206 3884 14464 79554 136c2 net/bluetooth/rfcomm/built-in.o.old
with x86 defconfig (and just bluetooth):
$ size net/bluetooth/built-in.o.defconfig.*
text data bss dec hex filename
66358 933 100 67391 1073f net/bluetooth/built-in.o.defconfig.new
66643 933 100 67676 1085c net/bluetooth/built-in.o.defconfig.old
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
ERTM timeouts are defined in milliseconds, but need to be converted
to jiffies when passed to mod_timer().
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
If the remote device is not present, the connections attemp fails and
the struct hci_conn was not freed
Signed-off-by: Tomas Targownik <ttargownik@geicp.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
PTS test A2DP/SRC/SRC_SET/TC_SRC_SET_BV_02_I revealed that
( probably after the df3c3931e commit ) the l2cap connection
could not be established in case when the "Auth Complete" HCI
event does not arive before the initiator send "Configuration
request", in which case l2cap replies with "Command rejected"
since the channel is still in BT_CONNECT2 state.
Based on patch from: Ilia Kolomisnky <iliak@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Partial revert of commit aabf6f89. When the hidp session thread
was converted from kernel_thread to kthread, the atomic/wakeups
were replaced with kthread_stop. kthread_stop has blocking semantics
which are inappropriate for the hidp session kthread. In addition,
the kthread signals itself to terminate in hidp_process_hid_control()
- it cannot do this with kthread_stop().
Lastly, a wakeup can be lost if the wakeup happens between checking
for the loop exit condition and setting the current state to
TASK_INTERRUPTIBLE. (Without appropriate synchronization mechanisms,
the task state should not be changed between the condition test and
the yield - via schedule() - as this creates a race between the
wakeup and resetting the state back to interruptible.)
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
A remote user can provide a small value for the command size field in
the command header of an l2cap configuration request, resulting in an
integer underflow when subtracting the size of the configuration request
header. This results in copying a very large amount of data via
memcpy() and destroying the kernel heap. Check for underflow.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Recent changes to hci_core.c use crypto interfaces, so select CRYPTO
to make sure that those interfaces are present.
Fixes these build errors when CRYPTO is not enabled:
net/built-in.o: In function `hci_register_dev':
(.text+0x4cf86): undefined reference to `crypto_alloc_base'
net/built-in.o: In function `hci_unregister_dev':
(.text+0x4f912): undefined reference to `crypto_destroy_tfm'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Recent changes to hci_core.c use crypto interfaces, so select CRYPTO
to make sure that those interfaces are present.
Fixes these build errors when CRYPTO is not enabled:
net/built-in.o: In function `hci_register_dev':
(.text+0x4cf86): undefined reference to `crypto_alloc_base'
net/built-in.o: In function `hci_unregister_dev':
(.text+0x4f912): undefined reference to `crypto_destroy_tfm'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
net/bluetooth/smp.c: In function 'smp_e':
net/bluetooth/smp.c:49:21: error: storage size of 'sg' isn't known
net/bluetooth/smp.c:67:2: error: implicit declaration of function 'sg_init_one'
net/bluetooth/smp.c:49:21: warning: unused variable 'sg'
Caused by commit d22ef0bc83 ("Bluetooth: Add LE SMP Cryptoolbox
functions"). Missing include file, presumably. This batch has been in
the bluetooth tree since June 14, so it may have been exposed by the
removal of linux/mm.h from netdevice.h ...
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
When the connection is ready we should set the connection
to CONNECTED so userspace can use it.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
We already have access to the chan, we don't have to access the
socket to get its imtu.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
We should not try to do any other type of configuration for
LE links when they become ready.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Instead of setting bits manually we use set_bit, test_bit, etc.
Also remove L2CAP_ prefix from macros.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Management interface commands for blocking and unblocking devices.
Signed-off-by: Antti Julku <antti.julku@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
In hci_conn_security ( which is used during L2CAP connection
establishment ) test for HCI_CONN_ENCRYPT_PEND state also
sets this state, which is bogus and leads to connection time-out
on L2CAP sockets in certain situations (especially when
using non-ssp devices )
Signed-off-by: Ilia Kolomisnky <iliak@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This patch implements a check in smp cmd pairing request and pairing
response to verify if encryption key maximum size is compatible in both
slave and master when SMP Pairing is requested. Keys are also masked to
the correct negotiated size.
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>
This patch adds support for disconnecting the link when SMP procedure
takes more than 30 seconds.
SMP begins when either the Pairing Request command is sent or the
Pairing Response is received, and it ends when the link is encrypted
(or terminated). Vol 3, Part H Section 3.4.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
When authentication completes we shouldn't blindly accept any pending
L2CAP connect requests. If the socket has the defer_setup feature
enabled it should still wait for user space acceptance of the connect
request. The issue only happens for non-SSP connections since with SSP
the L2CAP Connect request may not be sent for non-SDP PSMs before
authentication has completed successfully.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
The "dc" variable is initialized but not passed to hci_send_cmd().
Signed-off-by: Anderson Lizardo <anderson.lizardo@openbossa.org>
Signed-off-by: Bruna Moreira <bruna.moreira@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This patch implements a simple version of the SMP Pairing Features
exchange procedure (Vol. 3 Part H, Section 2.3.5.1).
For now, everything that would cause a Pairing Method different of
Just Works to be chosen is rejected.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Before we are able to do a proper exchange of pairing parameters,
we need a unified way of building pairing requests and responses.
For IO Capability we use the value that was set by userspace,
using the management interface.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
As the default security level (BT_SECURITY_SDP) doesn't make sense for
LE links, initialize LE links with something that makes sense.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This adds support for resuming the user space traffic when SMP
negotiation is complete.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Now that these commands are sent to the controller we can use hcidump
to verify that the correct values are produced.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This adds support for starting SMP Phase 2 Encryption, when the initial
SMP negotiation is successful. This adds the LE Start Encryption and LE
Long Term Key Request commands and related events.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This patch includes support for generating and sending the random value
used to produce the confirmation value.
Signed-off-by: Anderson Briglia <anderson.briglia@openbossa.org>
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This patch adds initial support for verifying the confirmation value
that the remote side has sent.
Signed-off-by: Anderson Briglia <anderson.briglia@openbossa.org>
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This patch implements SMP crypto functions called ah, c1, s1 and e.
It also implements auxiliary functions. All These functions are needed
for SMP keys generation.
Signed-off-by: Anderson Briglia <anderson.briglia@openbossa.org>
Signed-off-by: Anderson Lizardo <anderson.lizardo@openbossa.org>
Signed-off-by: Bruna Moreira <bruna.moreira@openbossa.org>
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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>
This implementation only exchanges SMP messages between the Host and the
Remote. No keys are being generated. TK and STK generation will be
provided in further patches.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Start SMP procedure for LE connections. This modification intercepts
l2cap received frames and call proper SMP functions to start the SMP
procedure. By now, no keys are being used.
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>
These simple commands will allow the SMP procedure to be started
and terminated with a not supported error. This is the first step
toward something useful.
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>
ERTM use the generic L2CAP timer functions to keep a reference to the
channel. This is useful for avoiding crashes.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
struct l2cap_chan has now its own refcnt that is compatible with the
socket refcnt, i.e., we won't see sk_refcnt = 0 and chan->refcnt > 0.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Now socket state is tracked by struct sock and channel state is tracked by
chan->state. At this point both says the same, but this is going to change
when we add AMP Support for example.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
