History log of /net/bluetooth/hci_core.c
Revision Date Author Comments
59f45d576a0715026d1919ab8a12047616204656 13-Jun-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix conditions for HCI_Delete_Stored_Link_Key

Even though the HCI_Delete_Stored_Link_Key command is mandatory for 1.1
and later controllers some controllers do not seem to support it
properly as was witnessed by one Broadcom based controller:

< HCI Command: Delete Stored Link Key (0x03|0x0012) plen 7
bdaddr 00:00:00:00:00:00 all 1
> HCI Event: Command Complete (0x0e) plen 4
Delete Stored Link Key (0x03|0x0012) ncmd 1
status 0x11 deleted 0
Error: Unsupported Feature or Parameter Value

Luckily this same controller also doesn't list the command in its
supported commands bit mask (counting from 0 bit 7 of octet 6):

< HCI Command: Read Local Supported Commands (0x04|0x0002) plen 0
> HCI Event: Command Complete (0x0e) plen 68
Read Local Supported Commands (0x04|0x0002) ncmd 1
status 0x00
Commands: ffffffffffff1ffffffffffff30fffff3f

Therefore, it makes sense to move sending of HCI_Delete_Stored_Link_Key
to after receiving the supported commands response and to only send it
if its respective bit in the mask is set. The downside of this is that
we no longer send the HCI_Delete_Stored_Link_Key command for Bluetooth
1.1 controllers since HCI_Read_Local_Supported_Command was introduced in
version 1.2, but this is an acceptable penalty as the command in
question shouldn't affect critical behavior.

Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Tested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
96570ffcca0b872dc8626e97569d2697f374d868 29-May-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix mgmt handling of power on failures

If hci_dev_open fails we need to ensure that the corresponding
mgmt_set_powered command gets an appropriate response. This patch fixes
the missing response by adding a new mgmt_set_powered_failed function
that's used to indicate a power on failure to mgmt. Since a situation
with the device being rfkilled may require special handling in user
space the patch uses a new dedicated mgmt status code for this.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Cc: stable@vger.kernel.org
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
77a63e0a550a731d2bd330679696d8fe66bf94a9 20-Apr-2013 Fengguang Wu <fengguang.wu@intel.com> Bluetooth: hci_get_cmd_complete() can be static

There are new sparse warnings show up in

tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next master
head: a0b644b0385fa58ca578f6dce4473e8a8e6f6c38
commit: 75e84b7c522c6e07964cd1f5bf28535768a1e9fa Bluetooth: Add __hci_cmd_sync() helper function
date: 13 days ago

>> net/bluetooth/hci_core.c:82:16: sparse: symbol 'hci_get_cmd_complete' was not declared. Should it be static?

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
c73eee9172bf061202c75ad4d16506a7efd04d1c 19-Apr-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix sending write_le_host_supporte for LE-only controllers

The Bluetooth Core Specification (4.0) defines the Write LE Host
Supported HCI command as only available for controllers supporting
BR/EDR. This is further reflected in the Read Local Extended Features
HCI command also not being available for LE-only controllers. In other
words, host-side LE support is implicit for single-mode LE controllers
and doesn't have explicit HCI-level enablement.

This patch ensures that the LE setting is always exposed as enabled
through mgmt and returns a "rejected" response if user space tries to
toggle the setting. The patch also ensures that Write LE Host Supported
is never sent for LE-only controllers.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
07dc93dd14957dc1faba08f0aadd27b082e35ba2 19-Apr-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix HCI command send functions to use const specifier

All HCI command send functions that take a pointer to the command
parameters do not need to modify the content in any way (they merely
copy the data to an skb). Therefore, the parameter type should be
declared const. This also allows passing already const parameters to
these APIs which previously would have generated a compiler warning.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
76a388beaf92cc75b829d4a0b7d69afaaeaa4b0a 05-Apr-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Rename LE_SCANNING_* macros

This patch renames LE_SCANNING_ENABLED and LE_SCANNING_DISABLED
macros to LE_SCAN_ENABLE and LE_SCAN_DISABLE in order to keep
the same prefix others LE scan macros have.

It also fixes le_scan_enable_req function so it uses the LE_SCAN_
ENABLE macro instead of a magic number.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
525e296a28561659d85a63befb694f36e6ec3429 05-Apr-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Add macros for filter duplicates values

This patch adds macros for filter_duplicates parameter values from
HCI LE Set Scan Enable command. It also fixes le_scan_enable_req
function so it uses the LE_SCAN_FILTER_DUP_ENABLE macro instead of
a magic number.

The LE_SCAN_FILTER_DUP_DISABLE was also defined since it will be
required to properly support the GAP Observer Role.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
b6c7515a288485fc638f95d484d8f1dbe1b7f541 05-Apr-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Change LE scanning timeout macros

Define LE scanning timeout macros in jiffies just like we do for
others timeout macros.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
d2c5d77fff6ac0f43fc36f4fde020f726f773c1d 17-Apr-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add reading of all local feature pages

With the introduction of CSA4 there is now also a features page number 2
available. This patch increments the maximum supported page number to 2
and adds code for reading all available pages (as long as we have
support for them - indicated by HCI_MAX_PAGES).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
5afff03815e26abf34702ec10422535224cdfe38 12-Nov-2012 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Remove driver init queue from core

The driver init queue is no longer needed. This can be all handled
inside the drivers now. So remove it.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
f41c70c4d5e3f6c2a7f9e5dfc10af452591a2484 12-Nov-2012 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Add driver setup stage for early init

Some drivers require a special stage for their early init. This is
always specific to the driver or transport. So call back into driver to
allow bringing up the device.

The advantage with this stage is that the Bluetooth core is actually
handling the HCI layer now. This means that command and event processing
is available.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
7b1abbbed0f2a1bc19bb8c0d48a284466043092a 03-Apr-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add __hci_cmd_sync_ev function

This patch adds a __hci_cmd_sync_ev function, analogous to
__hci_cmd_sync except that it also takes an event parameter to indicate
that the command completes with a special event instead of command
complete. Internally this new function takes advantage of the
hci_req_add_ev function introduced in the previous patch.

The primary expected user of this new function are the setup routines of
HCI drivers which may want to send custom commands and return only when
they have completed.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
02350a725f5bc44490c30a10e7e04a12a5ecd406 03-Apr-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add support for custom event terminated commands

This patch adds support for having commands within HCI requests that do
not result in a command complete but some other event. This is at least
needed for some vendor specific commands to be issued in the
hdev->setup() procecure, but might also be useful for other commands.

The way that the support is implemented is by extending the skb control
buffer to have a field to indicate that the command is expected to
terminate with a special event. After sending the command each received
event can then be compared against this field through hdev->sent_cmd.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
75e84b7c522c6e07964cd1f5bf28535768a1e9fa 02-Apr-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add __hci_cmd_sync() helper function

This patch adds a helper function for sending a single HCI command
waiting for its completion and then returning back the parameters in the
resulting command complete event (if there was one).

The implementation is very similar to that of hci_req_sync() except that
instead of invocing a callback for sending HCI commands the function
constructs and sends one itself and after being woken up picks the last
received event from hdev->recv_evt (if it matches the right criteria)
and returns it.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
b6ddb638235d90ed67af9af40e63880fd66a1939 02-Apr-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Track received events in hdev

This patch adds tracking of received HCI events to the hci_dev struct.
This is necessary so that a subsequent patch can implement a function
for sending a single command synchronously and returning the resulting
command complete parameters in the function return value.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
d4299ce6b33c0afd22cf6a170cfaf89c63d1114d 28-Mar-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Remove unneeded hci_req_cmd_status function

This patch removes the hci_req_cmd_status function since it is not
used anymore. The HCI request framework now considers the HCI command
has complete once the Command Status or Command Complete Event is
received.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
3e13fa1e1fab479940728272b6425d343e0c0f84 28-Mar-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Fix hci_inquiry ioctl usage

Since the HCI request framework was properly fixed, the hci_req_sync
call, in hci_inquiry, will return as soon as the HCI command completes
(not the Inquiry procedure). However, in inquiry ioctl implementation,
we want to sleep the user process until the inquiry procedure finishes.

This patch changes hci_inquiry so, in case the HCI Inquiry command
was executed successfully, it waits the HCI_INQUIRY flag to be cleared.
This way, the user process will sleep until the inquiry procedure
finishes.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
f332ec6699980e0563408c7bcf1a8a31b825fee1 15-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add reading of page scan parameters

These parameters are related to the "fast connectable" mode that can be
changed through the mgmt interface. Not all controllers properly reset
these values with HCI_Reset so they need to be read in order to be able
to verify whether the values are correct or not before enabling page
scan.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
04b4edcbc9049e100681c0149b572de439be42ab 15-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Handle AD updating through an async request

For proper control of the AD update and the related HCI commands it's
best to run the AD update through an async request instead of a
standalone HCI command. This patch changes the hci_update_ad() function
to take a request pointer and updates its users appropriately. E.g. the
function is no longer called after the init sequence but during stage 3
of the init sequence.

The TX power is read during the init sequence, so we don't need an
explicit update whenever it is read and the AD update based on the local
name should be done through the local name mgmt handler. The only other
user is the update based on enabling advertising. This part is still
kept as there is no mgmt API to enable it.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
35b973c9dd6d518491b251ac777d767d7820aa37 15-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix clearing flags on power off before notifying mgmt

When powering off the device the hdev->flags and hdev->dev_flags need to
be cleared before calling mgmt_powered(). If this is not done the
resulting events sent to user space may contain incorrect values.

Note that the HCI_AUTO_OFF flag accessed right after this is part of the
persistent flags, so it's unchanged by the hdev->dev_flags reset.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
f9f85279fd3a3284023231c7f0796f98c417e7cd 15-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Clear non-persistent flags when closing HCI device

When hci_dev_do_close() is called we should make sure to clear all
non-persistent flags in hci->dev_flags.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
34739c1effcbdc6d210324e86514fa2d2d47b12b 08-Mar-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Check req->err in hci_req_add

If req->err is set, there is no point in queueing the HCI command
in HCI request command queue since it won't be sent anyway.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
e348fe6bbab85c513816d2536ffabac4be016442 08-Mar-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Make hci_req_add returning void

Since no one checks the returning value of hci_req_add and HCI
request errors are now handled in hci_req_run, we can make hci_
req_add returning void.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
5d73e0342fd9bf500583868906325d42c4d2bf6f 08-Mar-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: HCI request error handling

When we are building a HCI request with more than one HCI command
and one of the hci_req_add calls fail, we should have some cleanup
routine so the HCI commands already queued on HCI request can be
deleted. Otherwise, we will face some memory leaks issues.

This patch implements the HCI request error handling which is the
following: If a hci_req_add fails, we save the error code in hci_
request. Once hci_req_run is called, we verify the error field. If
it is different from zero, we delete all HCI commands already queued
and return the error code.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
920c8300c66566afbf92311152c6e462a310203e 08-Mar-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Check hci_req_run returning value in __hci_req_sync

Since hci_req_run will be returning more than one error code, we
should check its returning value in __hci_req_sync.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
382b0c39b3f5b239e3fc07712027fcd4d503bd26 08-Mar-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Return ENODATA in hci_req_run

In case the HCI request queue is empty, hci_req_run should return
ENODATA instead of EINVAL. This way, hci_req_run returns a more
meaningful error value.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
bc4445c72cb5d1ed5af80c73e60214ab5ebd8e55 08-Mar-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Fix __hci_req_sync

If hci_req_run returns error, we erroneously leave the current
process in TASK_INTERRUPTABLE state. If we leave the process in
TASK_INTERRUPTABLE and it is preempted, this process will never
be scheduled again.

This patch fixes this issue by moving the preparation for scheduling
(add to waitqueue and set process state) to just after the hci_req_run
call.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
cecbb967b2f5c52e090978ff6afe7deddbfbeda5 05-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Remove unused hdev->init_last_cmd

This variable is no longer needed (due to async HCI request support and
the conversion of hci_req_sync to use it), so it can be safely removed.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
42c6b129cd8c2aa5012a78ec39672e7052cc677a 05-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Use async requests internally in hci_req_sync

This patch converts the hci_req_sync() procedure to internaly use the
asynchronous HCI requests.

The hci_req_sync mechanism relies on hci_req_complete() calls from
hci_event.c into hci_core.c whenever a HCI command completes. This is
very similar to what asynchronous requests do and makes the conversion
fairly straight forward by converting hci_req_complete into a request
complete callback. By this change hci_req_complete (renamed to
hci_req_sync_complete) becomes private to hci_core.c and all calls to it
can be removed from hci_event.c.

The commands in each hci_req_sync procedure are collected into their own
request by passing the hci_request pointer to the request callback
(instead of the hci_dev pointer). The one slight exception is the HCI
init request which has the special handling of HCI driver specific
initialization commands. These commands are run in their own request
prior to the "main" init request.

One other extra change that this patch must contain is the handling of
spontaneous HCI reset complete events that some controllers exhibit.
These were previously handled in the hci_req_complete function but the
right place for them now becomes the hci_req_cmd_complete function.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
9238f36a5a5097018b90baa42c473d2f916a46f5 05-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add request cmd_complete and cmd_status functions

This patch introduces functions to process the HCI request state when
receiving HCI Command Status or Command Complete events. Some HCI
commands, like Inquiry do not result in a Command complete event so
special handling is needed for them. Inquiry is a particularly important
one since it is the only forseeable "non-cmd_complete" command that will
make good use of the request functionality, and its completion is either
indicated by an Inquiry Complete event of a successful Command Complete
for HCI_Inquiry_Cancel.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11714b3d7acee54eecf85d41c938923a02fdd054 05-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix stand-alone HCI command handling

To have a consistent content for hdev->cmd_q all entries need to follow
the semantics of asynchronous HCI requests. This means that even single
commands need to be dressed as requests by having a request start
indicator. This patch adds these indicators to the two places needing
it (hci_send_cmd and hci_sock_sendmsg).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
71c76a170e979d60e01bd093c9b79e3adeb710cc 05-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Introduce new hci_req_add function

This function is analogous to hci_send_cmd() but instead of directly
queuing the command to hdev->cmd_q it adds it to the local queue of the
asynchronous HCI request being build (inside struct hci_request).

This is the main function used for building asynchronous requests and
there should be one or more calls to it between calls to hci_req_init
and hci_req_run.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
1ca3a9d06e87e09d2f852397f1fbf7c442c921b5 05-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Refactor HCI command skb creation

This patch moves out the skb creation from hci_send_cmd() into its own
prepare_cmd() function. This is essential so the same prepare_cmd()
function can be easily reused for skb creation for asynchronous HCI
requests.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
3119ae9599e5cdc1b9838563905c500b582ab6a5 05-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add initial skeleton for asynchronous HCI requests

This patch adds the initial definitions and functions for asynchronous
HCI requests. Asynchronous requests are essentially a group of HCI
commands together with an optional completion callback. The request is
tracked through the already existing command queue by having the
necessary context information as part of the control buffer of each skb.

The only information needed in the skb control buffer is a flag for
indicating that the skb is the start of a request as well as the
optional complete callback that should be used when the request is
complete (this will be found in the last skb of the request).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2177bab507d2715ae3b745f47056eacd38b79fa7 05-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Split HCI init sequence into three stages

Having conditional command sending during a request has always been
problematic and caused hacks like the hdev->init_last_cmd variable. This
patch removes these conditionals and instead splits the init sequence
into three stages, each with its own __hci_req_sync() call.

This also paves the way to the upcoming asynchronous request support
swhich will also benefit by having a simpler implementation if it
doesn't need to cater for requests that change on the fly.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
53cce22dc795e73fb48205e3f584f63f4c71c90c 05-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix __hci_req_sync() handling of empty requests

If a request callback doesn't send any commands __hci_req_sync() should
fail imediately instead of waiting for the inevitable timeout to occur.
This is particularly important once we start creating requests with
conditional command sending which can potentially result in no commands
being sent at all.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
01178cd420e0134ef3fb4da161ba6390c66913bf 05-Mar-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Rename hci_request to hci_req_sync

We'll be introducing an async version of hci_request. To make things
clear it makes sense to rename the existing API to have a _sync suffix.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
bed71748346ae0807c7f7a2913965508dbd61403 30-Jan-2013 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Rename hci_acl_disconn

As hci_acl_disconn function basically sends the HCI Disconnect Command
and it is used to disconnect ACL, SCO and LE links, renaming it to
hci_disconnect is more suitable.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
4821002ce2baa130666c2d777e0ed30bee6c7702 26-Jan-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Simplify UUIDs clearing code

The code for clearing the UUIDs list can be simplified by using
list_for_each_entry_safe instead of list_for_each_safe.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
46818ed514102c8d251d4aff5c99ad3ff6805432 14-Jan-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix using system-global workqueue when not necessary

There's a per-HCI device workqueue (hdev->workqueue) that should be used
for general per-HCI device work (except hdev->req_workqueue that's for
hci_request() related work). This patch fixes places using the
system-global work queue and makes them use the hdev->workqueue instead.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
1920257316615676387794cc5fb838183b3bae7f 14-Jan-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Use req_workqueue for hci_request operations

This patch converts work assignment relying on hci_request() from the
system-global work queue to the per-HCI device specific work queue
(hdev->req_workqueue) intended for hci_request() related tasks.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
6ead1bbc381a674c20f227dbe6f3a8c6f67ce7a2 14-Jan-2013 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add a new workqueue for hci_request operations

The hci_request function is blocking and cannot be called through the
usual per-HCI device workqueue (hdev->workqueue). While hci_request is
in progress any other work from the queue, including sending HCI
commands to the controller would be blocked and eventually cause the
hci_request call to time out.

This patch adds a second workqueue to be used by operations needing
hci_request and thereby avoiding issues with blocking other workqueue
users.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
7b064edae38d62d8587a8c574f93b53ce75ae749 10-Jan-2013 Jaganath Kanakkassery <jaganath.k@samsung.com> Bluetooth: Fix authentication if acl data comes before remote feature evt

If remote device sends l2cap info request before read_remote_ext_feature
completes then mgmt_connected will be sent in hci_acldata_packet() and
remote name request wont be sent and eventually authentication wont happen

Hcidump log of the issue

< HCI Command: Create Connection (0x01|0x0005) plen 13
bdaddr BC:85:1F:74:7F:29 ptype 0xcc18 rswitch 0x01 clkoffset 0x4bf7 (valid)
Packet type: DM1 DM3 DM5 DH1 DH3 DH5
> HCI Event: Command Status (0x0f) plen 4
Create Connection (0x01|0x0005) status 0x00 ncmd 1
> HCI Event: Connect Complete (0x03) plen 11
status 0x00 handle 12 bdaddr BC:85:1F:74:7F:29 type ACL encrypt 0x00
< HCI Command: Read Remote Supported Features (0x01|0x001b) plen 2
handle 12
> HCI Event: Command Status (0x0f) plen 4
Read Remote Supported Features (0x01|0x001b) status 0x00 ncmd 1
> HCI Event: Read Remote Supported Features (0x0b) plen 11
status 0x00 handle 12
Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
> HCI Event: Max Slots Change (0x1b) plen 3
handle 12 slots 5
< HCI Command: Read Remote Extended Features (0x01|0x001c) plen 3
handle 12 page 1
> HCI Event: Command Status (0x0f) plen 4
Read Remote Extended Features (0x01|0x001c) status 0x00 ncmd 1
> ACL data: handle 12 flags 0x02 dlen 10
L2CAP(s): Info req: type 2
< ACL data: handle 12 flags 0x00 dlen 16
L2CAP(s): Info rsp: type 2 result 0
Extended feature mask 0x00b8
Enhanced Retransmission mode
Streaming mode
FCS Option
Fixed Channels
> HCI Event: Read Remote Extended Features (0x23) plen 13
status 0x00 handle 12 page 1 max 1
Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
> ACL data: handle 12 flags 0x02 dlen 10
L2CAP(s): Info req: type 3
< ACL data: handle 12 flags 0x00 dlen 20
L2CAP(s): Info rsp: type 3 result 0
Fixed channel list 0x00000002
L2CAP Signalling Channel
> HCI Event: Number of Completed Packets (0x13) plen 5
handle 12 packets 2

This patch moves sending mgmt_connected from hci_acldata_packet() to
l2cap_connect_req() since this code is to handle the scenario remote
device sends l2cap connect req too fast

Signed-off-by: Jaganath Kanakkassery <jaganath.k@samsung.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
d82603c6da7579c50ebe3fe7da6e3e267d9f6427 27-Dec-2012 Jorrit Schippers <jorrit@ncode.nl> treewide: Replace incomming with incoming in all comments and strings

Signed-off-by: Jorrit Schippers <jorrit@ncode.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
ced5c338d7b696021058c23fb6a286def2171df5 28-Nov-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: AMP: Mark controller radio powered down after HCIDEVDOWN

After getting HCIDEVDOWN controller did not mark itself as 0x00 which
means: "The Controller radio is available but is currently physically
powered down". The result was even if the hdev was down we return
in controller list value 0x01 "status 0x01 (Bluetooth only)".

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
b9b5ef188e5a2222cfc16ef62a4703080750b451 21-Nov-2012 Gustavo Padovan <gustavo.padovan@collabora.co.uk> Bluetooth: cancel power_on work when unregistering the device

We need to cancel the hci_power_on work in order to avoid it run when we
try to free the hdev.

[ 1434.201149] ------------[ cut here ]------------
[ 1434.204998] WARNING: at lib/debugobjects.c:261 debug_print_object+0x8e/0xb0()
[ 1434.208324] ODEBUG: free active (active state 0) object type: work_struct hint: hci
_power_on+0x0/0x90
[ 1434.210386] Pid: 8564, comm: trinity-child25 Tainted: G W 3.7.0-rc5-next-
20121112-sasha-00018-g2f4ce0e #127
[ 1434.210760] Call Trace:
[ 1434.210760] [<ffffffff819f3d6e>] ? debug_print_object+0x8e/0xb0
[ 1434.210760] [<ffffffff8110b887>] warn_slowpath_common+0x87/0xb0
[ 1434.210760] [<ffffffff8110b911>] warn_slowpath_fmt+0x41/0x50
[ 1434.210760] [<ffffffff819f3d6e>] debug_print_object+0x8e/0xb0
[ 1434.210760] [<ffffffff8376b750>] ? hci_dev_open+0x310/0x310
[ 1434.210760] [<ffffffff83bf94e5>] ? _raw_spin_unlock_irqrestore+0x55/0xa0
[ 1434.210760] [<ffffffff819f3ee5>] __debug_check_no_obj_freed+0xa5/0x230
[ 1434.210760] [<ffffffff83785db0>] ? bt_host_release+0x10/0x20
[ 1434.210760] [<ffffffff819f4d15>] debug_check_no_obj_freed+0x15/0x20
[ 1434.210760] [<ffffffff8125eee7>] kfree+0x227/0x330
[ 1434.210760] [<ffffffff83785db0>] bt_host_release+0x10/0x20
[ 1434.210760] [<ffffffff81e539e5>] device_release+0x65/0xc0
[ 1434.210760] [<ffffffff819d3975>] kobject_cleanup+0x145/0x190
[ 1434.210760] [<ffffffff819d39cd>] kobject_release+0xd/0x10
[ 1434.210760] [<ffffffff819d33cc>] kobject_put+0x4c/0x60
[ 1434.210760] [<ffffffff81e548b2>] put_device+0x12/0x20
[ 1434.210760] [<ffffffff8376a334>] hci_free_dev+0x24/0x30
[ 1434.210760] [<ffffffff82fd8fe1>] vhci_release+0x31/0x60
[ 1434.210760] [<ffffffff8127be12>] __fput+0x122/0x250
[ 1434.210760] [<ffffffff811cab0d>] ? rcu_user_exit+0x9d/0xd0
[ 1434.210760] [<ffffffff8127bf49>] ____fput+0x9/0x10
[ 1434.210760] [<ffffffff81133402>] task_work_run+0xb2/0xf0
[ 1434.210760] [<ffffffff8106cfa7>] do_notify_resume+0x77/0xa0
[ 1434.210760] [<ffffffff83bfb0ea>] int_signal+0x12/0x17
[ 1434.210760] ---[ end trace a6d57fefbc8a8cc7 ]---

Cc: stable@vger.kernel.org
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2b2fec4d08a0aabe20d2e749cb7978f04217af65 20-Nov-2012 Szymon Janc <szymon.janc@tieto.com> Bluetooth: Remove OOB data if device was discovered in band

OOB authentication mechanism should be used only if pairing process
has been activated by previous OOB information exchange (Core Spec
4.0 , vol. 1, Part A, 5.1.4.3). Stored OOB data for specific device
should be removed if that device was discovered in band later on.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
3f0f524bafcd2025c12e215f13207c7be0a13bf9 08-Nov-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add support for setting LE advertising data

This patch adds support for setting basing LE advertising data. The
three elements supported for now are the advertising flags, the TX power
and the friendly name.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
bbaf444a89dd7dd7effd8ed2f4e4ec64da3cc1da 08-Nov-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Use proper invalid value for tx_power

The core specification defines 127 as the "not available" value (well,
"reserved" for BR/EDR and "not available" for LE - but essentially the
same). Therefore, instead of testing for 0 (which is in fact a valid
value) we should be using this invalid value to test if the tx_power is
available.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
fbe96d6ff9f4e361e1b2ec0a30140e17af7e3854 30-Oct-2012 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Notify about device registration before power on

It is important that the monitor interface gets notified about
a new device before its power on procedure has been started.

For some reason that is no longer working as expected and the power
on procedure runs first. It is safe to just notify about device
registration and trigger the power on procedure afterwards.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
f15504788d7b1613ef2ef0a673cfe250c16a6b0d 24-Oct-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Disallow LE scanning and connecting in peripheral role

When an adapter is in the LE peripheral role scanning for other devices
or initiating connections to them is not allowed. This patch makes sure
that such attempts will result in appropriate error returns.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
572c7f8429e3c015dd8931b2d3f71b512a7f15f1 19-Oct-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix LE MTU reporting for HCIGETDEVINFO

This patch fixes the use of le_mtu and le_pkts values in the
HCIGETDEVINFO ioctl for LE-only controllers.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
e1171e8d9c50c38a9adba72bb23949d9b975335c 19-Oct-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add initial support for LE-only controllers

This patch splits off most the HCI init sequence commands from a fixed
set into a conditional one that is sent once the HCI_Read_Local_Features
and HCI_Read_Local_Version_Information commands complete. This is
necessary since many of the current fixed commands are not allowed for
LE-only controllers.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
204a6e54280d53e6990e536998fbf8dfba41ecd3 15-Oct-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: AMP: Use Loglink handle in ACL Handle field

For AMP HCI controller use Logical Link handle in HCI ACL
Handle field.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
bd1eb66ba4eee21de3be24212b135f57101ad930 10-Oct-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: AMP: Handle AMP_LINK connection

AMP_LINK represents physical link between AMP controllers.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
ee22be7ef4f1d010a76fb41dc8fc687d38e606a3 20-Sep-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Factor out hci_queue_acl

Use hci_chan as parameter instead of hci_conn as we need logical
handle from hci_chan for AMP link.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
6ed93dc6427d14cdfe0b272cc0a9ee4685ce9ad7 24-Sep-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Use %pMR in debug instead of batostr

Instead of old unsafe batostr function use %pMR print specifier
for printing Bluetooth addresses in debug and error statements.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
78c04c0bf52360dc2f7185e99c8e9aa05d73ae5a 14-Sep-2012 Vinicius Costa Gomes <vinicius.gomes@openbossa.org> Bluetooth: Fix not removing power_off delayed work

For example, when a usb reset is received (I could reproduce it
running something very similar to this[1] in a loop) it could be
that the device is unregistered while the power_off delayed work
is still scheduled to run.

Backtrace:

WARNING: at lib/debugobjects.c:261 debug_print_object+0x7c/0x8d()
Hardware name: To Be Filled By O.E.M.
ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x26
Modules linked in: nouveau mxm_wmi btusb wmi bluetooth ttm coretemp drm_kms_helper
Pid: 2114, comm: usb-reset Not tainted 3.5.0bt-next #2
Call Trace:
[<ffffffff8124cc00>] ? free_obj_work+0x57/0x91
[<ffffffff81058f88>] warn_slowpath_common+0x7e/0x97
[<ffffffff81059035>] warn_slowpath_fmt+0x41/0x43
[<ffffffff8124ccb6>] debug_print_object+0x7c/0x8d
[<ffffffff8106e3ec>] ? __queue_work+0x259/0x259
[<ffffffff8124d63e>] ? debug_check_no_obj_freed+0x6f/0x1b5
[<ffffffff8124d667>] debug_check_no_obj_freed+0x98/0x1b5
[<ffffffffa00aa031>] ? bt_host_release+0x10/0x1e [bluetooth]
[<ffffffff810fc035>] kfree+0x90/0xe6
[<ffffffffa00aa031>] bt_host_release+0x10/0x1e [bluetooth]
[<ffffffff812ec2f9>] device_release+0x4a/0x7e
[<ffffffff8123ef57>] kobject_release+0x11d/0x154
[<ffffffff8123ed98>] kobject_put+0x4a/0x4f
[<ffffffff812ec0d9>] put_device+0x12/0x14
[<ffffffffa009472b>] hci_free_dev+0x22/0x26 [bluetooth]
[<ffffffffa0280dd0>] btusb_disconnect+0x96/0x9f [btusb]
[<ffffffff813581b4>] usb_unbind_interface+0x57/0x106
[<ffffffff812ef988>] __device_release_driver+0x83/0xd6
[<ffffffff812ef9fb>] device_release_driver+0x20/0x2d
[<ffffffff813582a7>] usb_driver_release_interface+0x44/0x7b
[<ffffffff81358795>] usb_forced_unbind_intf+0x45/0x4e
[<ffffffff8134f959>] usb_reset_device+0xa6/0x12e
[<ffffffff8135df86>] usbdev_do_ioctl+0x319/0xe20
[<ffffffff81203244>] ? avc_has_perm_flags+0xc9/0x12e
[<ffffffff812031a0>] ? avc_has_perm_flags+0x25/0x12e
[<ffffffff81050101>] ? do_page_fault+0x31e/0x3a1
[<ffffffff8135eaa6>] usbdev_ioctl+0x9/0xd
[<ffffffff811126b1>] vfs_ioctl+0x21/0x34
[<ffffffff81112f7b>] do_vfs_ioctl+0x408/0x44b
[<ffffffff81208d45>] ? file_has_perm+0x76/0x81
[<ffffffff8111300f>] sys_ioctl+0x51/0x76
[<ffffffff8158db22>] system_call_fastpath+0x16/0x1b

[1] http://cpansearch.perl.org/src/DPAVLIN/Biblio-RFID-0.03/examples/usbreset.c

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
e71dfabab03129182a955663cbd53406714d96c0 06-Sep-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: AMP: Add Read Data Block Size to amp_init

Add Read Data Block Size HCI cmd to AMP initialization, then it
makes possible to send data.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
93f71941c6d3ead73ca74d447b4007c6908f6eb5 06-Sep-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: trivial: Remove empty line

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
6b536b5e5e1da32f3ba1e3f42c7bf2f80d37dc6b 31-Aug-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Remove unneeded zero init

hdev is allocated with kzalloc so zero initialization is not needed.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
bb4b2a9ae38ef3bac69627f35e4f916752631fd1 19-Jul-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: mgmt: Managing only BR/EDR HCI controllers

Add check that HCI controller is BR/EDR. AMP controller shall not be
managed by mgmt interface and consequently user space.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2104786b429766adb32b5300bb5b4258abfd4b16 10-Jul-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: debug: Add printing num of cmds queued

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
ce2be9acff7f71b94e3d68e08df3f1592cae05a3 29-Jun-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Do not auto off AMP controller

Since AMP controller is not managed by user space do not shut it down.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
9345d40c580d0f3dfc040add0e6371b1a629c1cc 15-Jun-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Use AUTO_OFF constant in jiffies

Move AUTO_OFF_TIMEOUT to other constants changing name to
HCI_AUTO_OFF_TIMEOUT and convert to jiffies.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11778716ededa873f24eebaae011e52f3d27dfca 11-Jun-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Fix not setting HCI_RESET flag for AMP

Move reset function to common initialization section fixing
not setting HCI_RESET flag for amp_init.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
f0e0951007b051046587e73ffc9716caa024d537 11-Jun-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Correct debug print specifier for u16 objects

Some functions print u16 objects as "0xc03" others as "0x0c03". Patch
ensures that opcodes printed are the in the same format and consistent
with bluetooth code.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
bda4f23a5c20deabb07545591be872145528b4ed 11-Jun-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Add opcode to error message

Sometimes HCI command sending timeouts and gives error message without
specifying which command causes error. Patch makes sure that opcode
is printed to help debugging.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
5f246e890502fed387e0f959e2224ea680c03423 11-Jun-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Update HCI timeouts constants to use msecs_to_jiffies

The HCI constants are always used in form of jiffies. So just
include the conversion from msecs in the define itself. This has the
advantage of making the code where the timeout is used more readable
and avoiding unnecessary conversions.

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

Reported-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
975b91bb17e70c0dc33ad07f16097106a9c2c6a2 11-Jun-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Use standard HCI cmd timeout for RESET

Remove magic and use standard HCI cmd timeout

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
7490c6c2013dc1d42557d7c4694930631b0d0f34 01-Jun-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Remove magic disconnect reason

The macro gives a better idea of the what the error really is.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
0431a43ca5ada5ffd3668116b64168f4a1a64286 01-Jun-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Filter duplicated reports in LE scan

This patch enables filtering duplicated advertising reports during
LE scan.

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

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
3df92b31b2b593c5a067634ef2c30e76b2b2548d 27-May-2012 Sasha Levin <levinsasha928@gmail.com> Bluetooth: Really fix registering hci with duplicate name

Commit fc50744 ("Bluetooth: Fix registering hci with duplicate name") didn't
fully fix the duplicate naming issue with devices, and duplicate device names
could still be created:

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

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

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
82781e634f815e9a675ef643a5e11da0cf77ce0e 25-May-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Use __constant modifier in HCI code

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
8449e381a8558fb1d911017ea26bae681fea4240 23-May-2012 Gustavo Padovan <gustavo.padovan@collabora.co.uk> Bluetooth: Remove unneeded EXPORT_SYMBOL

After l2cap, sco and bluetooth modules merge some symbols doesn't need to
be exported anymore.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
8c520a59927a5600973782505dbb750d985057c4 23-May-2012 Gustavo Padovan <gustavo.padovan@collabora.co.uk> Bluetooth: Remove unnecessary headers include

Most of the include were unnecessary or already included by some other
header.
Replace module.h by export.h where possible.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
8fc9ced398824739d3c25c8aa7f6f34d8e7a49d9 23-May-2012 Gustavo Padovan <gustavo.padovan@collabora.co.uk> Bluetooth: Fix coding style in the subsystem

This is some leftover from the last patches that fixed style. It is mostly
line over 80 characters fixes reported by checkpatch.pl.
checkpatch.pl is clean for these files now.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
6039aa73a1323edc2d6d93a22505d4dc28f38e3f 23-May-2012 Gustavo Padovan <gustavo.padovan@collabora.co.uk> Bluetooth: Remove most of the inline usage

Only obvious cases were left as inline, mostly oneline functions.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9b3b44604ac8e06d299718c5d0fa0b91b675ae0b 23-May-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Use defined link key size

Remove magic number with defined link key size.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
a6c511c636848f871f5b7aef38e25e5b894b3b48 23-May-2012 Szymon Janc <szymon.janc@tieto.com> Bluetooth: Rename HCI_QUIRK_NO_RESET to HCI_QUIRK_RESET_ON_CLOSE

HCI_QUIRK_NO_RESET name is misleading - purpose of this quirk is to
reset device on close instead of init, not to not reset at all.
Rename it to HCI_QUIRK_RESET_ON_CLOSE to avoid confusion.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
a8c5fb1afe0b2661a8be78e340f86e6a627f9b32 17-May-2012 Gustavo Padovan <gustavo.padovan@collabora.co.uk> Bluetooth: Fix coding style in hci_core.c

Follow net subsystem rules.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
087bfd99f75c5f7d5430e7e122c2f288f03d6c23 11-May-2012 Gustavo Padovan <gustavo@padovan.org> Bluetooth: Fix packet size provided to the controller

When building fragmented skb's skb->len keeps track of the size of head
plus all fragments combined, however when queueing the skb for sending we
need to report the head size instead of the total size, so we just set
skb->len to skb_headlen().

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

Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Reviewed-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
671267bf3aac3dae0555730b07ef29c042e325b2 12-May-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: mgmt: Fix device_connected sending order

The mgmt_ev_device_connected signal must be sent before any event
indications happen for sockets associated with the connection. Otherwise
e.g. device authorization for the sockets will fail with ENOTCONN as
user space things that there is no baseband link.

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

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
479453d5fe3a5b911b7f56474764988100f9f650 25-Apr-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Remove advertising cache

User-space pass the remote device address type to kernel through
struct sockaddr_l2 what makes the advertising useless. This patch
removes all advertising cache code.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
31f7956c6648fbae9c9550e91d1c348d28276309 25-Apr-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Move bdaddr_to_le to hci_core

This patch moves the helper function bdaddr_to_le to hci_core, so it
can be used in mgmt.c and hci_conn.c.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
d8ce9395252fa9a264c04e7ab9949f4f7ec96f5b 22-Apr-2012 David Herrmann <dh.herrmann@googlemail.com> Bluetooth: Remove unneeded initialization in hci_alloc_dev()

We allocate memory with kzalloc() so there is no need to call
memset(..., 0, ...) or similar.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
b1b813d4777f4843af2acce9a1b62d486e1d3ffc 22-Apr-2012 David Herrmann <dh.herrmann@googlemail.com> Bluetooth: Move device initialization to hci_alloc_dev()

We currently initialize locks, lists, works, etc. in hci_register_dev()
(hci_alloc_dev() was added later) which is bogus because an hdev is in an
invalid state if it is not registered.
This patch moves all memory initialization to hci_alloc_dev(). Device
registering and registration of sub-modules is still left in
hci_register_dev() as it belongs there.

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

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

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9be0dab793f52615274c357fce542b3cbf78f6d7 22-Apr-2012 David Herrmann <dh.herrmann@googlemail.com> Bluetooth: Move hci_alloc/free_dev close to hci_register/unregister_dev

alloc() and register() (and free() and unregister()) are closely related
so move them more closely together. This will also allow to move
functionality from register() to alloc() without needing
forward-declarations.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
fc50744c1e518adfb4ff2eda156f941e20aea36d 18-Apr-2012 Ulisses Furquim <ulisses@profusion.mobi> Bluetooth: Fix registering hci with duplicate name

When adding HCI devices hci_register_dev assigns the same name
hci1 for subsequently added AMP devices.

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

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

Reported-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2d8b3a11623cf5203bc063927b6fc742625f1ebf 16-Apr-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Fix debug printing unallocated name

It does make sense to print hdev name after allocation.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
abc5de8f4e68ea785e32b91e456f467d2a2fb7db 11-Apr-2012 Mikel Astiz <mikel.astiz@bmw-carit.de> Bluetooth: Use unsigned int instead of signed int

The involved values are all unsigned and thus unsigned int should be
used instead of signed int. Assigning ~0 to a signed int results in -1,
which is confusing and error-prone, while the code is trying to set the
maximum value possible.

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

Signed-off-by: Mikel Astiz <mikel.astiz.oss@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
6bcbc4893fe8a6be3c3c5a83449d79dc9e9a51ac 28-Mar-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Add Read Local AMP Info to init

AMP Info will be used in Discovery Response.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
b24c62471c276b7ac6105e832eb6fe3c41a654ef 05-Apr-2012 Hemant Gupta <hemant.gupta@stericsson.com> Bluetooth: Fix clearing discovery type when stopping discovery

This patch prevents resetting of discovery type while stopping
discovery, since otherwise the wrong type might be send in case of
discovery failure. It also doesn't matter that we are "lazy" with
updating the type since it is anyway reset when starting discovery again
and it's not needed to know the current discovery state.

Signed-off-by: Hemant Gupta <hemant.gupta@stericsson.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
7537e5c3064c5a5751a7b26aba82ad83c5e89190 20-Mar-2012 Andre Guedes <aguedespe@gmail.com> Bluetooth: Replace EPERM by EALREADY in hci_cancel_inquiry

We should return -EALREADY in hci_cancel_inquiry since it is more
suitable than -EPERM error code.

Signed-off-by: Andre Guedes <aguedespe@gmail.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
7dbfac1d720d3ea68e00e187bbd2f1147257528b 15-Mar-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Add hci_cancel_le_scan() to hci_core

This patch adds to hci_core the hci_cancel_le_scan function which
should be used to cancel an ongoing LE scan.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
1036b89042df96e71c0cb941be212f8053ecccc0 12-Mar-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Fix opcode access in hci_complete

opcode to be accessed is in le16 format so convert it
first to cpu byte order.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
9a0066579270584108f1f2f97d98fe989d8117df 08-Mar-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Correct type for ediv to __le16

Correct type warnings reported by sparse to show that this
functions takes ediv argument in __le16 format.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
6ec5bcadc21e13ceba8c144e4731eccac01d04f7 16-Apr-2012 Vishal Agarwal <vishal.agarwal@stericsson.com> Bluetooth: Temporary keys should be retained during connection

If a key is non persistent then it should not be used in future
connections but it should be kept for current connection. And it
should be removed when connecion is removed.

Signed-off-by: Vishal Agarwal <vishal.agarwal@stericsson.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
745c0ce35f904aeff8e1ea325c259a14a00ff1b7 13-Apr-2012 Vishal Agarwal <vishal.agarwal@stericsson.com> Bluetooth: hci_persistent_key should return bool

This patch changes the return type of function hci_persistent_key
from int to bool because it makes more sense to return information
whether a key is persistent or not as a bool.

Signed-off-by: Vishal Agarwal <vishal.agarwal@stericsson.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
9ffc93f203c18a70623f21950f1dd473c9ec48cd 28-Mar-2012 David Howells <dhowells@redhat.com> Remove all #inclusions of asm/system.h

Remove all #inclusions of asm/system.h preparatory to splitting and killing
it. Performed with the following command:

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

Signed-off-by: David Howells <dhowells@redhat.com>
94324962066231a938564bebad0f941cd2d06bb2 15-Mar-2012 Johan Hovold <jhovold@gmail.com> Bluetooth: hci_core: fix NULL-pointer dereference at unregister

Make sure hci_dev_open returns immediately if hci_dev_unregister has
been called.

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

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

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

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

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

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
04124681f104c1980024ff249a34a77a249fd2bc 08-Mar-2012 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: fix conding style issues all over the tree

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
74fe619ef96466d562a1a13e7cbab783624ec2f3 01-Mar-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Don't force DISCOVERY_STOPPED state in inquiry_cache_flush

We are not supposed to force DISCOVERY_STOPPED in inquiry_cache_flush
because we may break the discovery state machine. For instance, during
interleaved discovery, when we are about to start inquiry, the state
machine forcibly goes to DISCOVERY_STOPPED while it should stay in
DISCOVERY_FINDING state.

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
75fb0e324daa48ec458fb5c2960eb07b80cfad9d 01-Mar-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix init sequence for some CSR based controllers

Some CSR controllers will generate a spontaneous reset during init and
just eat up any pending command without sending a command complete for
it. This patch solves the issue by just resending whatever was the last
sent command. hci_send_cmd is not used since we need to bypass all other
commands in the send queue.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
89bb46d02046b59c1de3d2e92680f3a1062750d0 28-Feb-2012 Dan Carpenter <dan.carpenter@oracle.com> Bluetooth: change min_t() cast in hci_reassembly()

"count" is type int so the cast to __u16 truncates the high bits away
and triggers a Smatch static checker warning. It looks like a high
value of count could cause a forever loop, but I didn't follow it
through to see if count is capped somewhere.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
388fc8faf200f80159353eb86cde4ab75d0a0bbd 22-Feb-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: mgmt: Add legacy pairing info to dev_found events

This patch makes sure that legacy pairing vs SSP infomation gets
properly propageted to the device_found events in the form of the legacy
pairing flag.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
09b3c3fbbee9aef8ac5d9148ae61aae35766b2a6 22-Feb-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix clearing of dev_class when powering down

We should assume a value of 0 for the device class when powered off.
The appropriate place to do this is in hci_dev_do_close().

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
e59fda8dc14c173b74b5e9d5c8d72849d2ff6b5f 22-Feb-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix EIR data clearing when powering off

When powering off we should assume that the EIR data isn't valid
anymore. This patch makes sure it gets cleared in hci_dev_do_close and
thereby ensures that a correct new EIR is recreated when powering on
again.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
70c1f20b00495fd25b81be14b263d32648a3d629 22-Feb-2012 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Fix two minor style issues in HCI code

WARNING: min() should probably be min_t(__u16, scb->expect, count)
+ len = min(scb->expect, (__u16)count);

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

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
5e5282bbfde9ca6157dba913d90cbab859a837e2 21-Feb-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: mgmt: Allow connectable/discoverable changes in off state

This patch makes it possible to toggle the connectable & discoverable
settings when powered off. Two new hdev->dev_flags flags are added to
track what the scan mode should be when the device is finally powered
on.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
8ee5654034c85b3915d078147a9d1064cac1852e 21-Feb-2012 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Don't send New Settings event during setup power down

When the controller gets brought up for initial setup, it will be brought
back down after a timeout. In that case, don't send a New Settings event.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
f963e8e9d3652f4a8065d969206707a1c21ff9b0 20-Feb-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: mgmt: Add address type parameter to Discovering event

This patch adds an address type parameter to the Discovering event. The
value matches that given to Start/Stop Discovery.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
d7b7e79688c07b445bc52adfedf9a176be156f4b 20-Feb-2012 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Set supported settings based on enabled HS and/or LE

Since neither High Speed (HS) nor Low Energy (LE) are fully implemented
yet, only expose them in supported settings when enabled.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
cd82e61c110a36e398323e422896fcfe05879fed 20-Feb-2012 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Add support for HCI monitor channel

The HCI monitor channel can be used to monitor all packets and events
from the Bluetooth subsystem. The monitor is not bound to any specific
HCI device and allows even capturing multiple devices at the same time.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
040030ef7d907107e6489b39da518bdf94136d68 20-Feb-2012 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Remove HCI notifier handling

The HCI notifier handling was never used outside of Bluetooth core layer
and thus remove it and replace it with direct function calls. Also move
the stack internal event generation into the HCI socket layer.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
470fe1b540fb50ba8ce01e0ac985602e8fbb108c 20-Feb-2012 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Split sending for HCI raw and control sockets

The sending functions for HCI raw and control sockets have nothing in
common except that they iterate over the socket list. Split them into
two so they can do their job more efficient. In addition the code becomes
more readable.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
343f935bfa44189c68527102c409286b0cfc4526 18-Feb-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Merge INQUIRY and LE_SCAN discovery states

This patch merges DISCOVERY_INQUIRY and DISCOVERY_LE_SCAN states
into a new state called DISCOVERY_FINDING.

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

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
4aab14e5504e84c42534378f91e836e6f55d0886 18-Feb-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Track discovery type

This patch adds to struct discovery_state the field 'type' so that
we can track the discovery type the device is performing.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
7b99b659d90c5d421cb1867295c78a4c0c030734 13-Feb-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Fix event sending with DISCOVERY_STOPPED state

We are not supposed to send mgmt_discovering events if we are transiting
from DISCOVERY_STARTING to DISCOVERY_STOPPED state. It doesn't make
sense to send mgmt_discovering event once discovery procedure has not
been even started.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
ca0d6c7ece0e78268cd7c5c378d6b1b610625085 03-Feb-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add missing QUIRK_NO_RESET test to hci_dev_do_close

We should only perform a reset in hci_dev_do_close if the
HCI_QUIRK_NO_RESET flag is set (since in such a case a reset will not be
performed when initializing the device).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
88c1fe4ba55c7245ad2f3c81689f854287875121 09-Feb-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add address type to mgmt blacklist messages

This patch updates the implmentation for mgmt_block_device and
mgmt_unblock_device and their corresponding events to match the latest
API specification.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
28b75a89480df99a17c8facd5c33985847d06bb6 03-Feb-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Add hci_le_scan()

We are not supposed to block in start_discovery() because
start_discovery code is running in write() syscall context
and this would block the write operation on the mgmt socket.
This way, we cannot directly call hci_do_le_scan() to scan
LE devices in start_discovery(). To overcome this issue a
derefered work (hdev->le_scan) was created so we can properly
call hci_do_le_scan().

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
7ba8b4be38e7c83b2b13333a82a0ecde921a7390 03-Feb-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Add hci_do_le_scan()

This patch adds to hci_core the hci_do_le_scan function which
should be used to scan LE devices.

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
6fbe195dc41c4fae1fa7aca1a38c888de1d24e2d 03-Feb-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Minor code refactoring

This patch does a trivial code refacting in hci_discovery_active.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
c599008f8f999dab8cb4a6404be99bdc4716ba15 03-Feb-2012 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: LE scan should send Discovering events

Send MGMT Discovering events once LE scan starts/stops so the
userspace can track when local adapters are discovering LE devices.

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
8af59467412b4b61850d3ccb3737c09ecc6dc100 03-Feb-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add missing QUIRK_NO_RESET test to hci_dev_do_close

We should only perform a reset in hci_dev_do_close if the
HCI_QUIRK_NO_RESET flag is set (since in such a case a reset will not be
performed when initializing the device).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
63d2bc1b9a4d77f90b9719c3ff2570a274a7a22f 03-Feb-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Helper removes duplicated code

Use __check_timout helper to remove duplicated code

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
b71d385a18cd4516c62d0198c9ec37e658112f75 03-Feb-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Recalculate sched HCI blk/pkt flow ctrl

Split HCI scheduling for block and packet flow control.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
261cc5aa9e54aac633dcc3b6469739cb6e23e21a 03-Feb-2012 Vinicius Costa Gomes <vinicius.gomes@openbossa.org> Bluetooth: Add support for notifying userspace of new LTK's

If we want to have proper pairing support over LE we need to
inform userspace that a new LTK is available, so userspace
can store that key permanently.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
c9839a11c0e460a2457e7cac76650d07773e6c3b 03-Feb-2012 Vinicius Costa Gomes <vinicius.gomes@openbossa.org> Bluetooth: Use the updated key structures for handling LTKs

This updates all the users of the older way, that was using the
link_keys list to store the SMP keys, to use the new way.

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

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
b899efaf9b26cadb084752862490b4fc44bc3169 03-Feb-2012 Vinicius Costa Gomes <vinicius.gomes@openbossa.org> Bluetooth: Add new structures for handling SMP Long Term Keys

This includes a new list for storing the keys and a new structure used
to represent each key.

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

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
4777bfdebbddc1f58d9148de5a3e00375d063768 31-Jan-2012 Andre Guedes <aguedespe@gmail.com> Bluetooth: Use GFP_KERNEL in hci_add_adv_entry()

This function is not called in interrupt context anymore, so it
should use GFP_KERNEL to allocate memory.

Signed-off-by: Andre Guedes <aguedespe@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
8b281b9c7820b054d15cf471c418fd884cbbec78 10-Jan-2012 Fabio Estevam <festevam@gmail.com> Bluetooth: Fix 'enable_hs' type

Fix the following build warning:

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

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

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
a3d4e20a88f54571d794cca365f232bfed0669bb 08-Jan-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Sort to-be-resolved devices by RSSI during discovery

This patch makes sure that devices with stronger signal (RSSI closer to
0) are sorted first in the resolve list and will therefore get their
names resolved first during device discovery. Since it's more likely
that the device the user is trying to discover has a strong signal due
to its proximity this ensures that the user gets the "device found"
event for it more quickly.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
a8b2d5c2cfe1c6398e3fdd4372c4ae7f74fb4493 08-Jan-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Move mgmt related flags from hdev->flags to hdev->dev_flags

There's no point in exposing these to user-space (which is what happens
to everything in hdev->flags) so move them to dev_flags instead.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
dc946bd86f725c42c3ab1caf9966d29f5b364fea 07-Jan-2012 David Herrmann <dh.herrmann@googlemail.com> Bluetooth: Remove __hci_dev_put/hold

Since we remove the owner field of hci_dev hci_dev_put and __hci_dev_put
do the same so we can merge them into one function. Same for
hci_dev_hold and __hci_dev_hold.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
4c724c7135ca2b407bd318b4267456a7b5723825 07-Jan-2012 David Herrmann <dh.herrmann@googlemail.com> Bluetooth: Correctly take hci_dev->dev refcount

The hci_dev->dev device structure has an internal refcount. This
refcount is used to protect the whole hci_dev object. However, we
currently do not use it. Therefore, if someone calls hci_free_dev() we
currently immediately destroy the hci_dev object because we never took
the device refcount.

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

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

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
e9b9cfa1575e37cb2dbb5534aeaaa16814228887 07-Jan-2012 David Herrmann <dh.herrmann@googlemail.com> Bluetooth: Remove HCI-owner field

After unregistering an hci_dev object a bluetooth driver does not have
any callbacks in the hci_dev structure left over. Therefore, there is no
need to keep a reference to the module.

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

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
010666a126fce7b9ecdda7209c558db21d771c56 07-Jan-2012 David Herrmann <dh.herrmann@googlemail.com> Bluetooth: Make hci-destruct callback optional

Several drivers already provide an empty callback so we can actually
make this optional and then remove all those empty callbacks in the
drivers.

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

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
cc48dc0a996af6ae20e91c551d71e7f72768860f 04-Jan-2012 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Remove magic number from ACL TO

Adds HCI_ACL_TX_TIMEOUT and clear conversion from msec to jiffies

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
30dc78e1a2bcbe2a0fca7aa44dfded4bb0db6148 04-Jan-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add name resolving support for mgmt based discovery

This patch adds the necessary logic to perform name lookups after
inquiry completes. This is done by checking for entries in the resolve
list after each inquiry complete and remote name complete HCI event.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
ff9ef5787046c3fd20cf9f7ca1cd70260c1eedb9 04-Jan-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add discovery state tracking

This patch adds proper state tracking to the device discovery process.
This makes it possible to return appropriate errors when trying to stop
a non-active discovery or start discovery when it is already ongoing.
Once name resolving is implemented this also makes it possible to know
what the right action to do is when a remote name lookup is cancelled.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
30883512be0839349d29c7b0bc31016e0498cf8c 04-Jan-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Rename hdev->inq_cache to hdev->discovery

This struct is used for not just inquiry caching but also for general
device discovery state tracking so it's better to rename it to something
more appropriate.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
4663262c294c71aa1139616ae7f24dd345a69c15 02-Jan-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Flush inquiry cache when starting mgmt triggered inquiry

For the remote name state tracking for the management interface to work
the cache needs to be flushed whenever inquiry is started. The
hci_do_inquiry function is only used by the management interface so by
having the flushing done from it ensures that old ioctl based
functionality isn't affected.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
3175405b906a85ed2bad21e09c444266e4a05a8e 04-Jan-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Return updated name state with hci_inquiry_cache_update

If user-space has already confirmed the name for a remote device we
shouldn't request confirmation again. The simplest way to do this is to
return the name state from hci_inquiry_cache_update (if it is anything
else than unknown then we do not need confirmation from user-space).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
561aafbcb2e3f8fee11d3781f866c7b4c4f93a28 04-Jan-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add initial mgmt_confirm_name support

This patch adds initial support for mgmt_confirm_name. It adds the
necessary tracking of the name state by extending the inquiry cache. The
actual name resolving operation (to be done once inquiry is finished) is
not yet part of this patch.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
b57c1a5646739bfc273245dc738f2f12a2d4d3ec 03-Jan-2012 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Convert inquiry cache to use standard list types

This makes it possible to use the convenience functions provided for
standard kernel list types and it also makes it easier to extend the use
of the cache for the management interface where e.g. name resolving
control will be needed.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
b1cc16b8e643096adb92bbcb76c6c4c564141c40 22-Jan-2012 David S. Miller <davem@davemloft.net> bluetooth: hci: Fix type of "enable_hs" to bool.

Fixes:

net/bluetooth/hci_core.c: In function ‘__check_enable_hs’:
net/bluetooth/hci_core.c:2587:1: warning: return from incompatible pointer type [enabled by default]

Signed-off-by: David S. Miller <davem@davemloft.net>
cad44c2bf6165e46e309d4db0ffd286a9259aa2a 23-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Revert "Bluetooth: Increase HCI reset timeout in hci_dev_do_close"

This reverts commit e1b6eb3ccb0c2a34302a9fd87dd15d7b86337f23.

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

Reported-by: Tomáš Janoušek <tomi@nomi.cz>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
af3e6359a2b52970c63c3c9f73d52be281a162ad 22-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Don't disable interrupt when locking the queue

We run everything in process context now.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
f20d09d5f7093e5dc5f231c65835e2d04739bd5e 22-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: remove *_bh usage from hci_dev_list and hci_cb_list

They don't need to disable interrupts anymore, we only run in process
context now.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
686ebf283ba19f82abd8aaec023cd124749be9ec 21-Dec-2011 Ulisses Furquim <ulisses@profusion.mobi> Bluetooth: Make HCI call directly into SCO and L2CAP event functions

The struct hci_proto and all related register/unregister and dispatching
code was removed. HCI core code now call directly the SCO and L2CAP
event functions.

Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
f2d64f6aa6c681ca00a71c2b3304ed80dc317752 20-Dec-2011 Ulisses Furquim <ulisses@profusion.mobi> Bluetooth: Remove global mutex hci_task_lock

The hci_task_lock mutex (previously a lock) was supposed to protect the
register/unregister of HCI protocols against RX/TX tasks. This will not
be needed anymore because SCO and L2CAP will always be compiled.

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

Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2455a3ea0c0235fe3c32b67649ff7db3fb892d90 19-Dec-2011 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Initialize default flow control mode

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
e61ef49966777defa84b04159ea23cdeb2c7cd4c 19-Dec-2011 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Split ctrl init to BREDR and AMP parts

Current controller initialization is moved tp bredr_init and new
function added amp_init to handle later AMP init sequence. Current
AMP init sequence include Reset and Read Local Version.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
65983fc7bb8df655706cb6e8353b6561b633ee4d 14-Dec-2011 Mat Martineau <mathewm@codeaurora.org> Bluetooth: Incoming ACL packets do not force active mode

Incoming sk_buffs always have bt_cb(skb)->force_active set to 0, so
it's misleading to use that value from the control block when calling
hci_conn_enter_active_mode() for incoming data. The destination socket
is not known in the HCI layer, so the force_active setting for each
socket isn't known either. Hard-coding the force_active parameter does
not change any behavior, but makes it obvious that incoming ACL data
never exits sniff mode.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
7d78525dcf5c6fe5e6e73d22776ed5f960e3153e 14-Dec-2011 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add timer for automatically disabling the service cache

We do not want the service cache to be enabled indefinitely after
mgmt_read_info is called. To solve this a timer is added which will
automatically disable the cache if mgmt_set_dev_class isn't called
within 5 seconds of calling mgmt_read_info.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
590051de5ce54f7ae02997ed0a2532f08c7b7866 18-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Add ProFUSION's copyright

Add ProFUSION's copyright to some files I've been touching recently.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
7f971041cf591d8cf3b289c9d78739638ca7e629 18-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Use system workqueue to schedule power_on

hdev->workqueue should be only for rx/tx, so move this one out.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
32845eb1242e4c862de8d27c19ae9b3011f89291 17-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Use new alloc_workqueue()

Update hdev workqueue API usage to use the new interface, this new
interface also allow us to mark this workqueue as WQ_HIGHPRI, so now rx
and tx work gets higher priority when running.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
80b7ab33414beeb3c17600af9b69d903f5cf8a7d 17-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: move power_off to system workqueue

hdev->workqueue will be only for for rx/tx/cmd processing, all other small
works should go to the system workqueue for now.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
3eff45eaf81780dad25c167bbaafa7d25ae407da 15-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: convert tx_task to workqueue

This should simplify Bluetooth core processing a lot.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
c347b765fe70d718c721cd6d0b979cfbaed83125 15-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Move command task to workqueue

As part of the moving on all the Bluetooth processing to Process context.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
bf4c63252490ba78fb833cc7acf1a5b1900c970f 15-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: convert conn hash to RCU

Handling hci_conn_hash with RCU make us avoid some locking and disable
tasklets.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
8192edef03f9b47f1cc1120724db525e63e218f3 14-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Use RCU to manipulate chan_list

Instead of using tasklet_disable() to prevent acess to the channel use, we
can use RCU and improve the performance of our code.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
67d0dfb5ec781e9fe030e4e61359ee6eed66ff92 09-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: move hci_task_lock to mutex

Now we can sleep in any path inside Bluetooth core, so mutex can make
sense here.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
db323f2fff0ded058f033df6235e8c2be4146bfd 20-Jun-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Use delayed work for advertisiment cache timeout

As HCI rx path is now done in process context it makes sense to do all the
timer in process context as well.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
09fd0de5bd8f8ef3317e5365f92f1a13dcd89aa9 17-Jun-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Replace spin_lock by mutex in hci_dev

Now we run everything in HCI in process context, so it's a better idea use
mutex instead spin_lock. The macro remains hci_dev_lock() (and I got rid
of hci_dev_lock_bh()), of course.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
b78752cc71d86998d3b77d873c61d6ffdb7a2142 09-Aug-2010 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Process recv path in a workqueue instead of a tasklet

Run recv process in workqueue helps a lot with our processing as the recv
path will also be in the process context, i.e., now all our tx and rx are
in process context.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2c33c06a8fd2f784ca763ad150d5d63c3c49946e 14-Dec-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: remove struct hci_chan_hash

Only the list member of the struct was used, so we now fold it into
hci_conn.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
ce7e4ad1436a0139c16225f2376134cff3ad24fe 01-Dec-2011 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: remove old code

Remove old code not touched for several years.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
d23264a896a931c4b355c102d8e9d46649195ba4 26-Nov-2011 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Add dev_flags to struct hci_dev

This patch adds the dev_flags field to struct hci_dev. This new
flags variable should be used to define flags related to BR/EDR
and/or LE controller itself. It should be used to define flags
which represents states from the controller. The dev_flags is
cleared in case the controller sends a Reset Command Complete
Event to the host.

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

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
c6feeb28aed51831c27c9f42e5c15129b1562a5b 16-Nov-2011 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Use queue in the device list

Use queue instead of stack discipline for device list. When processing
dev_list with list_for_each* devices will be prosessed in order they
were added (Usually BR/EDR first and AMP later).

Also output from hciconfig looks nicer :-)

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
7784d78f184a80ca576f87b5a663b7b40e7a9b25 18-Nov-2011 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: making enable_hs independent from L2CAP

Fixes bluetooth compiling when CONFIG_BT_L2CAP is not enabled

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

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
1ec918cef5ced016edb95c357e45e656e4e156b1 16-Nov-2011 Szymon Janc <szymon.janc@tieto.com> Bluetooth: Fix some checkpatch.pl errors and warnings

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
07e3b94ac385cc9d5fd31d6dcd233da0958b9984 11-Nov-2011 Andrei Emeltchenko <andrei.emeltchenko@intel.com> Bluetooth: Do not set HCI_RAW when HS enabled

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
e0f9309f371096b82ad35aa2c27d7f848f37e696 09-Nov-2011 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Fix cancel_delayed_work_sync usage with locks

The cancel_delayed_work_sync function should not be used if we hold any
locks. Luckily all places where this is the case it is also safe to use
the non-sync version.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
56e5cb86eb377970825486a5861f5926d65e64c1 08-Nov-2011 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add missing hci_dev locking when calling mgmt functions

Now that the pending commands are within struct hci_dev we can properly
control access to them throught the hci_dev locking mechanism.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2e58ef3e11d0775795345a20185b5a7c4bdae194 08-Nov-2011 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Move pending management command list into struct hci_dev

This patch moves the pending management command list (previously global
to mgmt.c) into struct hci_dev. This makes it possible to do proper
locking when accessing it (through the existing hci_dev locks) and
thereby avoid race conditions.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
744cf19eadcf4de914394e0eb227f94f4318f5e4 08-Nov-2011 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Pass full hci_dev struct to mgmt callbacks

The current global pending command list in mgmt.c is racy. Possibly the
simplest way to fix it is to have per-hci dev lists instead of a global
one (all commands that need a pending struct are hci_dev specific).
This way the list can be protected using the already existing per-hci
dev lock. To enable this refactoring the first thing that needs to be
done is to ensure that the mgmt functions have access to the hci_dev
struct (instead of just the dev id).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
86742e1eca319069490f6f20c2892baafc2a6922 07-Nov-2011 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Update link key mgmt APIs to match latest spec.

BR/EDR link keys have their own commands and events (separate from SMP)
and the remove_keys command (previously remove_key) removes keys of any
kind for the specified remote address.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
3243553fdc108a0ef49b9e25bdea9c87b341413e 07-Nov-2011 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Convert power off mechanism to use delayed_work

The power off code doesn't need to use its own custom timer since the
delayed_work API provides the exact same functionality.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
16ab91ab48287aa4fc757f3618820f728ee4412f 07-Nov-2011 Johan Hedberg <johan.hedberg@intel.com> Bluetooth: Add timeout field to mgmt_set_discoverable

Based on the revised mgmt API set_discoverable has a timeout parameter
to specify how long the adapter will remain discoverable. A value of 0
means "indefinitively".

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
023d50498d04c77b73eed11d849e436ef5639ed2 04-Nov-2011 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Create hci_cancel_inquiry()

This patch adds a function to hci_core to cancel an ongoing inquiry.

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

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

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2519a1fc82490eb13d69610f81fe84930f3b0e3f 07-Nov-2011 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Create hci_do_inquiry()

This patch adds a function to hci_core to carry out inquiry.

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
08add513caa8930b8f7b9d5837a7dda624741745 03-Nov-2011 Mat Martineau <mathewm@codeaurora.org> Bluetooth: Guarantee BR-EDR device will be registered as hci0

It's convenient to use the HCI device index the AMP controller id, but
the spec requires that an AMP controller never has id 0.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
02b20f0bb661829cbd431e5deb2474e909e65cec 02-Nov-2011 Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Bluetooth: recalculate priorities when channels are starving

To avoid starvation the priority is recalculated so that the starving
channels are promoted to HCI_PRIO_MAX - 1 (6).

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

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
ec1cce24d5950e797f10650abf7890ead67c6e64 02-Nov-2011 Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Bluetooth: handle priority change within quote

The quote is calculated based on the first buffer in the queue so if the
priority changes to something lower than the priority of the first skb
the quote needs to be recalculated.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
73d80deb7bdf0171f22e76dc2429c1f99eff90e2 02-Nov-2011 Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Bluetooth: prioritizing data over HCI

This implement priority based scheduler using skbuffer priority set via
SO_PRIORITY socket option.

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

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
43611a7b16038753e0510dfb0c038c80a10c80c3 17-Oct-2011 Szymon Janc <szymon@janc.net.pl> Bluetooth: Increase HCI reset timeout in hci_dev_do_close

I've noticed that my CSR usb dongle was not working if it was plugged in when
PC was booting. It looks like I get two HCI reset command complete events (see
hcidump logs below).
The root cause is reset called from off_timer. Timeout for this reset to
complete is set to 250ms and my bt dongle requires more time for replying with
command complete event. After that, chip seems to reply with reset command
complete event for next non-reset command.

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

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

Hcidump log:

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

Signed-off-by: Szymon Janc <szymon@janc.net.pl>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
8035ded466049ca2fe8c04564a0fa00f222abe3f 01-Nov-2011 Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Bluetooth: replace list_for_each with list_for_each_entry whenever possible

When all items in the list have the same type there is no much of a point
to use list_for_each except if you want to use the list pointer itself.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
59735631d24e3463f139a21255e0db94bc59081e 26-Oct-2011 David Herrmann <dh.herrmann@googlemail.com> Bluetooth: Make hci_unregister_dev return void

hci_unregister_dev cannot fail and always returns 0. The drivers already ignore
the return value so we can safely make it return void.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
e1b6eb3ccb0c2a34302a9fd87dd15d7b86337f23 17-Oct-2011 Szymon Janc <szymon@janc.net.pl> Bluetooth: Increase HCI reset timeout in hci_dev_do_close

I've noticed that my CSR usb dongle was not working if it was plugged in when
PC was booting. It looks like I get two HCI reset command complete events (see
hcidump logs below).
The root cause is reset called from off_timer. Timeout for this reset to
complete is set to 250ms and my bt dongle requires more time for replying with
command complete event. After that, chip seems to reply with reset command
complete event for next non-reset command.

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

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

Hcidump log:

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

Signed-off-by: Szymon Janc <szymon@janc.net.pl>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
33ca954daf1ac03c86237b73235d8b0856d84981 08-Oct-2011 David Herrmann <dh.herrmann@googlemail.com> Bluetooth: Forward errors from hci_register_dev

We need to catch errors when calling hci_add_sysfs() and return them to
the caller to avoid kernel oopses on device_add() failure.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
ce242970f0934869483221c410d09c00bc8967e7 08-Oct-2011 David Herrmann <dh.herrmann@googlemail.com> Bluetooth: Rename sysfs un/register to add/del

As we introduced hci_init_sysfs() we should also rename
hci_register_sysfs() and hci_unregister_sysfs() to hci_add_sysfs() and
hci_del_sysfs() like we do with hci_conn_add/del_sysfs(). It looks more
consistent now.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
0ac7e7002c4d0841197e9ccb8cfecc5b8c58b200 08-Oct-2011 David Herrmann <dh.herrmann@googlemail.com> Bluetooth: Fix hci core device initialization

We must not call device_del() if we didn't use device_add(). See module.c
for comments on that. Therefore, we need to call device_initialize() when
allocating the hci device and later device_add() instead of
device_register().

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

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

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
5e762444b0d3e56bbd66f5092434c4a1ba698313 25-Aug-2011 Antti Julku <antti.julku@nokia.com> Bluetooth: Add mgmt events for blacklisting

Add management interface events for blocking/unblocking a device.
Sender of the block device command gets cmd complete and other
mgmt sockets get the event. Event is also sent to mgmt sockets when
blocking is done with ioctl, e.g when blocking a device with
hciconfig. This makes it possible for bluetoothd to track status
of blocked devices when a third party block or unblocks a device.

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

Signed-off-by: Antti Julku <antti.julku@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
1c1def09c446aae441410b70e6439ffe44dee866 05-Sep-2011 Vinicius Costa Gomes <vinicius.gomes@openbossa.org> Bluetooth: Move SMP fields to a separate structure

The objective is to make the core to have as little as possible
information about SMP procedures and logic. Now, all the SMP
specific information is hidden from the core.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
52087a792c1513b85de674a4fc67fb92855474c3 17-Aug-2011 Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Bluetooth: make use of connection number to optimize the scheduler

This checks if there is any existing connection according to its type
before start iterating in the list and immediately stop iterating when
reaching the number of connections.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
7bdb8a5cf17f66614a9897645efcd4ccc27535ee 26-Jul-2011 Szymon Janc <szymon@janc.net.pl> Bluetooth: Don't use cmd_timer to timeout HCI reset command

No command should be send before Command Complete event for HCI
reset is received. This fix regression introduced by commit
6bd32326cda(Bluetooth: Use proper timer for hci command timout)
for chips whose reset command takes longer to complete (e.g. CSR)
resulting in next command being send before HCI reset completed.

Signed-off-by: Szymon Janc <szymon@janc.net.pl>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
8475e2336cf80ba6e7b27715b4b3214d73c211ab 03-Aug-2011 Dan Carpenter <error27@gmail.com> Bluetooth: unlock if allocation fails in hci_blacklist_add()

There was a small typo here so we never actually hit the goto which
would call hci_dev_unlock_bh().

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
726b4ffcaa450d9593b9b6ac8605967ce9f3e506 08-Jul-2011 Vinicius Costa Gomes <vinicius.gomes@openbossa.org> Bluetooth: Add support for storing the key size

In some cases it will be useful having the key size used for
encrypting the link. For example, some profiles may restrict
some operations depending on the key length.

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

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

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
75d262c2ad927751bb5f096f3a6a37d81e7784f2 07-Jul-2011 Vinicius Costa Gomes <vinicius.gomes@openbossa.org> Bluetooth: Add functions to manipulate the link key list for SMP

As the LTK (the new type of key being handled now) has more data
associated with it, we need to store this extra data and retrieve
the keys based on that data.

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

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
8aded7110a5625bc00aef05e94dd4b1a9cf3605f 07-Jul-2011 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Fix potential deadlock in hci_core

Since hdev->lock may be acquired by threads runnning in interrupt
context, all threads running in process context should disable
local bottom halve before locking hdev->lock. This can be done by
using hci_dev_lock_bh macro.

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

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2e65c9d2c5206eb24439f2dd2daa2f6702df358e 01-Jul-2011 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Remove enable_smp parameter

The enable_smp parameter is no longer needed. It can be replaced by
checking lmp_host_le_capable.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
eead27da60df80a112d1ac3ea482226e9794c26b 01-Jul-2011 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Add lmp_host_le_capable() macro

Since we have the extended LMP features properly implemented, we
should check the LMP_HOST_LE bit to know if the host supports LE.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
e175072f377047e28e399c5c661e39e69722f35b 30-Jun-2011 Joe Perches <joe@perches.com> Bluetooth: Rename function bt_err to bt_to_errno

Make it easier to use more normal logging styles later.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
a7925bd27d6ef020b8f3a3a64bde61d0add07220 17-Jun-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Fix locking in blacklist code

There was no unlock call on the errors path

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
b2a66aad8620337e38d6692f03d94a03d5129840 14-Jun-2011 Antti Julku <antti.julku@nokia.com> Bluetooth: Move blacklisting functions to hci_core

Move blacklisting functions to hci_core.c, so that they can
be used by both management interface and hci socket interface.

Signed-off-by: Antti Julku <antti.julku@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
3a0259bb80cec7595a2d085a150412d23ba28c81 09-Jun-2011 Vinicius Costa Gomes <vinicius.gomes@openbossa.org> Bluetooth: Add support for using the crypto subsystem

This will allow using the crypto subsystem for encrypting data. As SMP
(Security Manager Protocol) is implemented almost entirely on the host
side and the crypto module already implements the needed methods
(AES-128), it makes sense to use it.

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

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Anderson Briglia <anderson.briglia@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
14b12d0b98f87162b7e9e93dde66d1af97886567 24-May-2011 Jaikumar Ganesh <jaikumar@google.com> Bluetooth: Add BT_POWER L2CAP socket option.

Add BT_POWER socket option used to control the power
characteristics of the underlying ACL link. When the remote end
has put the link in sniff mode and the host stack wants to send
data we need need to explicitly exit sniff mode to work well with
certain devices (For example, A2DP on Plantronics Voyager 855).
However, this causes problems with HID devices.

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

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

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

Signed-off-by: Jaikumar Ganesh <jaikumar@google.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
3581508571b513ed2e66d71f9708d6be907460fd 26-May-2011 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: Advertising entries lifetime

This patch adds a timer to clear 'adv_entries' after three minutes.

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

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
76c8686f8871f1bcb2dc8b4c5311cd0e2f73d4cd 26-May-2011 Andre Guedes <andre.guedes@openbossa.org> Bluetooth: LE advertising cache

This patch implements the LE advertising cache. It stores sensitive
information (bdaddr and bdaddr_type so far) gathered from LE
advertising report events.

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

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
f81c62242045fb7be0a124d8c2540af96d842fad 03-Jun-2011 Joe Perches <joe@perches.com> net: Remove unnecessary semicolons

Semicolons are not necessary after switch/while/for/if braces
so remove them.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4df378a10e31698df1679f3329301d773a654b61 28-Apr-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Add store_hint parameter to mgmt_new_key

Even for keys that shouldn't be stored some use cases require the
knowledge of a new key having been created so that the conclusion of a
successful pairing can be made. Therefore, always send the mgmt_new_key
event but add a store_hint parameter to it to indicate to user space
whether the key should be stored or not.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
4748fed2d1a2a7a816277754498b8aa70850e051 28-Apr-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Remove old_key_type from mgmt_ev_new_key

User space shouldn't have any need for the old key type so remove it
from the corresponding Management interface event.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
655fe6ece7e71b37c17577ae485d11bf701c95f7 28-Apr-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Fix connection key type updating for buggy controllers

If a controller generates a changed combination key as its first key the
connection key type will not be correctly set. In these situations make
sure the update the connection key type when such a buggy controller is
detected.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
12adcf3a953c3aa4006d855aa638133bf018ceac 28-Apr-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Fix old_key_type logic for non-persistent keys

Even if there's no previous key stored the connection might still be
secured with a non-persistent key and in that case the key type in the
hci_conn struct should be checked.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
d25e28abe58d2bcedf6025a6ccc532c29a19046f 28-Apr-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Fix link key persistent storage criteria

Link keys should only be stored if very specific criteria of the
authentication process are fulfilled. This patch essentially copies the
criteria that user space has so far been using to the kernel side so
that the management interface works properly.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
b6020ba055c7f1ca901dc8751ecc7c9de58164db 28-Apr-2011 Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com> Bluetooth: Add definitions for link key types

Introduce the link key types defs and use them instead of magic numbers.

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
b79f44c16a4e2181b1d6423afe746745d5e949ff 11-Apr-2011 Vinicius Costa Gomes <vinicius.gomes@openbossa.org> Bluetooth: Fix keeping the command timer running

In the teardown path the reset command is sent to the controller,
this event causes the command timer to be reactivated.

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

Reported-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
1e429f3842b5c9b5967a250f4daf78f92436268c 04-Apr-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Remove gfp_mask param from hci_reassembly()

It is unnecessary, once we are always in interrupt context.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
6f5ef998b7b0b1bf1471654bf6176a5419197128 24-Mar-2011 Thomas Gleixner <tglx@linutronix.de> Bluetooth: Fix warning with hci_cmd_timer

After we made debugobjects working again, we got the following:

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

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

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

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
105721328f0fa53e772592eaca17ee0023f0cc87 16-Mar-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Fix HCI_RESET command synchronization

We can't send new commands before a cmd_complete for the HCI_RESET command
shows up.

Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Reported-by: Justin P. Mattock <justinmattock@gmail.com>
Reported-by: Ed Tomlinson <edt@aei.ca>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Tested-by: Justin P. Mattock <justinmattock@gmail.com>
Tested-by: Mikko Vinni <mmvinni@yahoo.com>
Tested-by: Ed Tomlinson <edt@aei.ca>
2763eda6ccaf126633bb3180f440c8f3589f0679 22-Mar-2011 Szymon Janc <szymon.janc@tieto.com> Bluetooth: Add add/remove_remote_oob_data management commands

This patch adds commands to add and remove remote OOB data to the managment
interface. Remote data is stored in kernel and can be used by corresponding
HCI commands and events when needed.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
f0681a68dd3a32699891cd1de93459aee5af7728 17-Mar-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: remove unnecessary function declaration

hci_notify() doesn't need declaration first.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
25985edcedea6396277003854657b5f3cb31a628 31-Mar-2011 Lucas De Marchi <lucas.demarchi@profusion.mobi> Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
b77dcf8460ae57d4eb9fd3633eb4f97b8fb20716 24-Mar-2011 Thomas Gleixner <tglx@linutronix.de> Bluetooth: Fix warning with hci_cmd_timer

After we made debugobjects working again, we got the following:

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

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

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

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
f630cf0d5434e3923e1b8226ffa2753ead6b0ce5 16-Mar-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Fix HCI_RESET command synchronization

We can't send new commands before a cmd_complete for the HCI_RESET command
shows up.

Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Reported-by: Justin P. Mattock <justinmattock@gmail.com>
Reported-by: Ed Tomlinson <edt@aei.ca>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Tested-by: Justin P. Mattock <justinmattock@gmail.com>
Tested-by: Mikko Vinni <mmvinni@yahoo.com>
Tested-by: Ed Tomlinson <edt@aei.ca>
01df8c31d152493ddc58a0bd1719eac6759add87 17-Feb-2011 Szymon Janc <szymon.janc@tieto.com> Bluetooth: Fix some code style issues in hci_core.c

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
6bd32326cdaa9b14794416150c88e4832fb7e592 16-Feb-2011 Ville Tervo <ville.tervo@nokia.com> Bluetooth: Use proper timer for hci command timout

Use proper timer instead of hci command flow control to timeout
failed hci commands. Otherwise stack ends up sending commands
when flow control is used to block new commands.

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

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
c6f3c5f7f2938d2809bcc15889e9aa212038a554 16-Feb-2011 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Fix crash when ioctl(HCIUARTSETPROTO) fails

If the fail happens the HCI del_timer may timeout after the the hci dev
unregister. This lead to a kernel crash.

Reported-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
bae1f5d9464d231148301fcbf4e425a096a5b96d 11-Feb-2011 Ville Tervo <ville.tervo@nokia.com> Bluetooth: Treat LE and ACL links separately on timeout

Separate LE and ACL timeouts. Othervise ACL connections
on non LE hw will time out after 45 secs.

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
6ed58ec520ad2b2fe3f955c8a5fd0eecafccebdf 11-Feb-2011 Ville Tervo <ville.tervo@nokia.com> Bluetooth: Use LE buffers for LE traffic

Bluetooth chips may have separate buffers for LE traffic.
This patch add support to use LE buffers provided by the chip.

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
5a08eccedaa1e12b74cf3afea9e11a9aefc29f73 11-Jan-2011 Andrei Emeltchenko <andrei.emeltchenko@nokia.com> Bluetooth: Do not use assignments in IF conditions

Fix checkpatch warnings concerning assignments in if conditions.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
17fa4b9dff72fb3a1a68cc80caf98fc941d2b8b3 25-Jan-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Add set_io_capability management command

This patch adds a new set_io_capability management command which is used
to set the IO capability for Secure Simple Pairing (SSP) as well as the
Security Manager Protocol (SMP). The value is per hci_dev and each
hci_conn object inherits it upon creation.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
55ed8ca10f3530de8edbbf138acb50992bf5005b 17-Jan-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Implement link key handling for the management interface

This patch adds a management commands to feed the kernel with all stored
link keys as well as remove specific ones or all of them. Once the
load_keys command has been called the kernel takes over link key
replies. A new_key event is also added to inform userspace of newly
created link keys that should be stored permanently.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
d83506003608910d24d5ace9ec06ad1bfd9ad110 10-Jan-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Remove page timeout setting from HCI init sequence

User space should set the page timeout so there's no need to explicitly
set it in the HCI init sequence. Even if user space fails to set it the
controller default value will be used.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
b0916ea0d9e6ea3ed46bb7a61c13a2b357b0248b 10-Jan-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Add controller side link key clearing to hci_init_req

The controller may have link keys in its own memory and these keys could
be used for secure connections. However, since the interface to access
these keys doesn't provide information about the key types (which would
be needed to infer the level of security each key provides) using these
keys is rather useless. Therefore, simply clear the controller side list
in the initialization procedure.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
a5040efa2017f3e4f1b4d5f40fd989567f3994c1 10-Jan-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Add special handling with __hci_request and HCI_INIT

To support a more dynamic HCI initialization sequence the __hci_request
behavior requires some more changes. Particularly, the init sequence
should be able to have conditionals in it (sending some HCI commands
depending on the outcome of a previous command) instead of being a fixed
list as it is right now.

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

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

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2aeb9a1ae0e34fb46cb78b82f827a6a54ab65111 03-Jan-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Implement UUID handling through the management interface

This patch adds methods to the management interface for userspace to
notify the kernel of which services have been registered for specific
adapters. This information is needed for setting the appropriate Class
of Device value as well as the Extended Inquiry Response value. This
patch doesn't actually implement setting of these values but just
provides the storage of the UUIDs so the needed functionality can be
built on top of it.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
c542a06c29acbf4ea0024884a198065a10613147 26-Jan-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Implement set_pairable managment command

This patch implements a new set_pairable management command to control
the pairable state of local adapters. The state is represented using a
new HCI_PAIRABLE flag in the hci_dev struct.

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

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
eec8d2bcc841ae44edcde9660ff21144a2016053 16-Dec-2010 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Add support for set_powered management command

This patch adds a set_powered command to the management interface
through which the powered state of local adapters can be controlled.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
5add6af8fcbce269cac2457584c0ebfda055474a 16-Dec-2010 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Add support for management powered event

This patch adds support for the powered event that's used to indicate to
userspace when the powered state of a local adapter changes.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
ab81cbf99c881ca2b9a83682a8722fc84b2483d2 15-Dec-2010 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Implement automatic setup procedure for local adapters

This patch implements automatic initialization of basic information
about newly registered Bluetooth adapters. E.g. the address and features
are always needed so it makes sense for the kernel to automatically
power on adapters and read this information. A new HCI_SETUP flag is
added to track this state.

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

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

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
e702112ff68a554bcac16bb03ddc2b8e5425bcbf 03-Jan-2011 Andrei Emeltchenko <andrei.emeltchenko@nokia.com> Bluetooth: Use non-flushable by default L2CAP data packets

Modification of Nick Pelly <npelly@google.com> patch.

With Bluetooth 2.1 ACL packets can be flushable or non-flushable. This commit
makes ACL data packets non-flushable by default on compatible chipsets, and
adds the BT_FLUSHABLE socket option to explicitly request flushable ACL
data packets for a given L2CAP socket. This is useful for A2DP data which can
be safely discarded if it can not be delivered within a short time (while
other ACL data should not be discarded).

Note that making ACL data flushable has no effect unless the automatic flush
timeout for that ACL link is changed from its default of 0 (infinite).

Default packet types (for compatible chipsets):
Frame 34: 13 bytes on wire (104 bits), 13 bytes captured (104 bits)
Bluetooth HCI H4
Bluetooth HCI ACL Packet
.... 0000 0000 0010 = Connection Handle: 0x0002
..00 .... .... .... = PB Flag: First Non-automatically Flushable Packet (0)
00.. .... .... .... = BC Flag: Point-To-Point (0)
Data Total Length: 8
Bluetooth L2CAP Packet

After setting BT_FLUSHABLE
(sock.setsockopt(274 /*SOL_BLUETOOTH*/, 8 /* BT_FLUSHABLE */, 1 /* flush */))
Frame 34: 13 bytes on wire (104 bits), 13 bytes captured (104 bits)
Bluetooth HCI H4
Bluetooth HCI ACL Packet
.... 0000 0000 0010 = Connection Handle: 0x0002
..10 .... .... .... = PB Flag: First Automatically Flushable Packet (2)
00.. .... .... .... = BC Flag: Point-To-Point (0)
Data Total Length: 8
Bluetooth L2CAP Packet

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
e2e0cacbd4b0c7c69c7591d37c243f2363aeaa71 03-Jan-2011 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Fix leaking blacklist when unregistering a hci device

The blacklist should be freed before the hci device gets unregistered.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
23bb57633df97ede067ea26f3cdc8a7ba2cd8109 21-Dec-2010 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Fix __hci_request synchronization for hci_open_dev

The initialization function used by hci_open_dev (hci_init_req) sends
many different HCI commands. The __hci_request function should only
return when all of these commands have completed (or a timeout occurs).
Several of these commands cause hci_req_complete to be called which
causes __hci_request to return prematurely.

This patch fixes the issue by adding a new hdev->req_last_cmd variable
which is set during the initialization procedure. The hci_req_complete
function will no longer mark the request as complete until the command
matching hdev->req_last_cmd completes.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
c71e97bfaadfa727669fcfcf12301744fd169091 13-Dec-2010 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Add management events for controller addition & removal

This patch adds Bluetooth Management interface events for controller
addition and removal. The events correspond to the existing HCI_DEV_REG
and HCI_DEV_UNREG stack internal events.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
70f23020e6d89155504b5b39f22505f4aec6fa6f 01-Dec-2010 Andrei Emeltchenko <andrei.emeltchenko@nokia.com> Bluetooth: clean up hci code

Do not use assignment in IF condition, remove extra spaces,
fixing typos, simplify code.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
80e2c88803c72747cb19febe2ad708bf0ad557bf 09-Sep-2010 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Don't clear the blacklist when closing the HCI device

Clearing the blacklist in hci_dev_do_close() would mean that user space
needs to do extra work to re-block devices after a DEVDOWN-DEVUP cycle.
This patch removes the clearing of the blacklist in this case and
thereby saves user space from the extra work.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
ea4bd8ba804dedefa65303b3bd105d6d2808e621 31-Jul-2010 David Miller <davem@davemloft.net> Bluetooth: Use list_head for HCI blacklist head

The bdaddr in the list root is completely unused and just
taking up space.

Signed-off-by: David S. Miller <davem@davemloft.net>
Tested-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
da5f6c37eee040775997191d1a1bc91c0c1e51eb 24-Jul-2010 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Test 'count' value before enter the loop

Testing first we avoid enter the loop when count = 0.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9981151086385eecc2febf4ba95a14593f834b3d 14-Jul-2010 Suraj Sumangala <suraj@atheros.com> Bluetooth: Implemented HCI frame reassembly for RX from stream

Implemented frame reassembly implementation for reassembling fragments
received from stream.

Signed-off-by: Suraj Sumangala <suraj@atheros.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
f39a3c06404d01ef2ce47e821bc778dfb1836df9 14-Jul-2010 Suraj Sumangala <suraj@atheros.com> Bluetooth: Modified hci_recv_fragment() to use hci_reassembly helper

Modified packet based reassembly function hci_recv_fragment() to use
hci_reassembly()

Signed-off-by: Suraj Sumangala <suraj@atheros.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
33e882a5f2301a23a85ef2994e30fd9f48d39d9b 14-Jul-2010 Suraj Sumangala <suraj@atheros.com> Bluetooth: Implement hci_reassembly helper to reassemble RX packets

Implements feature to reassemble received HCI frames from any input stream

Signed-off-by: Suraj Sumangala <suraj@atheros.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
cd4c53919ed50b0d532f106aeb76e79077bece98 14-Jul-2010 Suraj Sumangala <suraj@atheros.com> Bluetooth: Add one more buffer for HCI stream reassembly

Additional reassembly buffer to keep track of stream reasembly

Signed-off-by: Suraj Sumangala <suraj@atheros.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
f03585689fdff4ae256edd45a35bc2dd83d3684a 18-May-2010 Johan Hedberg <johan.hedberg@nokia.com> Bluetooth: Add blacklist support for incoming connections

In some circumstances it could be desirable to reject incoming
connections on the baseband level. This patch adds this feature through
two new ioctl's: HCIBLOCKADDR and HCIUNBLOCKADDR. Both take a simple
Bluetooth address as a parameter. BDADDR_ANY can be used with
HCIUNBLOCKADDR to remove all devices from the blacklist.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
3fa21e07e6acefa31f974d57fba2b6920a7ebd1a 18-May-2010 Joe Perches <joe@perches.com> net: Remove unnecessary returns from void function()s

This patch removes from net/ (but not any netfilter files)
all the unnecessary return; statements that precede the
last closing brace of void functions.

It does not remove the returns that are immediately
preceded by a label as gcc doesn't like that.

Done via:
$ grep -rP --include=*.[ch] -l "return;\n}" net/ | \
xargs perl -i -e 'local $/ ; while (<>) { s/\n[ \t\n]+return;\n}/\n}/g; print; }'

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
f48fd9c8cd746fdb055a97249a209c77dca0f710 20-Mar-2010 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Create per controller workqueue

Instead of having a global workqueue for all controllers, it makes
more sense to have a workqueue per controller.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9a9c6a34416b3743c09c00f3d6708d9df3c21629 01-May-2010 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Make hci_send_acl() void

hci_send_acl can't fail, so we can make it void. This patch changes
that and all the funcions that use hci_send_acl().
That change exposed a bug on sending connectionless data. We were not
reporting the lenght send back to the user space.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
0d861d8b8edd139a9b291cb262d08dec8dc3922d 01-May-2010 Gustavo F. Padovan <padovan@profusion.mobi> Bluetooth: Make hci_send_sco() void

It also removes an unneeded check for the MTU. The check is done before
on sco_send_frame()

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
943da25d95c7e8fd8c39dbf09e030f5da46f5d85 13-Feb-2010 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Add controller types for BR/EDR and 802.11 AMP

With the Bluetooth 3.0 specification and the introduction of alternate
MAC/PHY (AMP) support, it is required to differentiate between primary
BR/EDR controllers and 802.11 AMP controllers. So introduce a special
type inside HCI device for differentiation.

For now all AMP controllers will be treated as raw devices until an
AMP manager has been implemented.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
c13854cef4751000b968d4e8ac95796562d5b96f 08-Feb-2010 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Convert controller hdev->type to hdev->bus

The hdev->type is misnamed and should be actually hdev->bus instead. So
convert it now.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
c78ae283145d3a8799b2fb01650166a66af3bff8 18-Nov-2009 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Unobfuscate tasklet_schedule usage

The tasklet schedule function helpers are just an obfuscation. So remove
them and call the schedule functions directly.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
76bca88012e1d27de794f32cc551d6314d38b6d9 18-Nov-2009 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Turn hci_recv_frame into an exported function

For future simplification it is important that the hci_recv_frame
function is no longer an inline function. So move it into the module
itself and export it.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
a6a67efd7088702fdbbb780c5a3f8e1a74e77b63 26-Jul-2009 Thomas Gleixner <tglx@linutronix.de> Bluetooth: Convert hdev->req_lock to a mutex

hdev->req_lock is used as mutex so make it a mutex.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
611b30f74b5d8ca036a9923b3bf6e0ee10a21a53 08-Jun-2009 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Add native RFKILL soft-switch support for all devices

With the re-write of the RFKILL subsystem it is now possible to easily
integrate RFKILL soft-switch support into the Bluetooth subsystem. All
Bluetooth devices will now get automatically RFKILL support.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7585b97a48180f754ebdade1be94092e36bef365 25-Feb-2009 Wei Yongjun <yjwei@cn.fujitsu.com> Bluetooth: Remove some pointless conditionals before kfree_skb()

Remove some pointless conditionals before kfree_skb().

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
a418b893a6af11ae73c762ed5b76c1bad6dc19d8 30-Nov-2008 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Enable per-module dynamic debug messages

With the introduction of CONFIG_DYNAMIC_PRINTK_DEBUG it is possible to
allow debugging without having to recompile the kernel. This patch turns
all BT_DBG() calls into pr_debug() to support dynamic debug messages.

As a side effect all CONFIG_BT_*_DEBUG statements are now removed and
some broken debug entries have been fixed.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7a9d4020533b5c0c615b6de3be154c9ff30b8cc9 30-Nov-2008 Marcel Holtmann <marcel@holtmann.org> Bluetooth: Send HCI Reset command by default on device initialization

The Bluetooth subsystem was not using the HCI Reset command when doing
device initialization. The Bluetooth 1.0b specification was ambiguous
on how the device firmware was suppose to handle it. Almost every device
was triggering a transport reset at the same time. In case of USB this
ended up in disconnects from the bus.

All modern Bluetooth dongles handle this perfectly fine and a lot of
them actually require that HCI Reset is sent. If not then they are
either stuck in their HID Proxy mode or their internal structures for
inquiry and paging are not correctly setup.

To handle old and new devices smoothly the Bluetooth subsystem contains
a quirk to force the HCI Reset on initialization. However maintaining
such a quirk becomes more and more complicated. This patch turns the
logic around and lets the old devices disable the HCI Reset command.

The only device where the HCI_QUIRK_NO_RESET is still needed are the
original Digianswer devices and dongles with an early CSR firmware.

CSR reported that they fixed this for version 12 firmware. The last
official release of version 11 firmware is build ID 115. The first
version 12 candidate was build ID 117.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
c6bf514c6e0171c5b731beffaa0c4463e2335f3d 30-Nov-2008 Vegard Nossum <vegard.nossum@gmail.com> Bluetooth: Fix leak of uninitialized data to userspace

struct hci_dev_list_req {
__u16 dev_num;
struct hci_dev_req dev_req[0]; /* hci_dev_req structures */
};

sizeof(struct hci_dev_list_req) == 4, so the two bytes immediately
following "dev_num" will never be initialized. When this structure
is copied to userspace, these uninitialized bytes are leaked.

Fix by using kzalloc() instead of kmalloc(). Found using kmemcheck.

Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7c6a329e444725f24c02192ac493d8a7cd9fa638 12-Sep-2008 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Fix regression from using default link policy

To speed up the Simple Pairing connection setup, the support for the
default link policy has been enabled. This is in contrast to settings
the link policy on every connection setup. Using the default link policy
is the preferred way since there is no need to dynamically change it for
every connection.

For backward compatibility reason and to support old userspace the
HCISETLINKPOL ioctl has been switched over to using hci_request() to
issue the HCI command for setting the default link policy instead of
just storing it in the HCI device structure.

However the hci_request() can only be issued when the device is
brought up. If used on a device that is registered, but still down
it will timeout and fail. This is problematic since the command is
put on the TX queue and the Bluetooth core tries to submit it to
hardware that is not ready yet. The timeout for these requests is
10 seconds and this causes a significant regression when setting up
a new device.

The userspace can perfectly handle a failure of the HCISETLINKPOL
ioctl and will re-submit it later, but the 10 seconds delay causes
a problem. So in case hci_request() is called on a device that is
still down, just fail it with ENETDOWN to indicate what happens.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
769be974d0c7b4fe1a52f9cdaad22259b60953f7 14-Jul-2008 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Use ACL config stage to retrieve remote features

The Bluetooth technology introduces new features on a regular basis
and for some of them it is important that the hardware on both sides
support them. For features like Simple Pairing it is important that
the host stacks on both sides have switched this feature on. To make
valid decisions, a config stage during ACL link establishment has been
introduced that retrieves remote features and if needed also the remote
extended features (known as remote host features) before signalling
this link as connected.

This change introduces full reference counting of incoming and outgoing
ACL links and the Bluetooth core will disconnect both if no owner of it
is present. To better handle interoperability during the pairing phase
the disconnect timeout for incoming connections has been increased to
10 seconds. This is five times more than for outgoing connections.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
e4e8e37c42bdaaefcb84eeaef0dc1bc3f696f8f6 14-Jul-2008 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Make use of the default link policy settings

The Bluetooth specification supports the default link policy settings
on a per host controller basis. For every new connection the link
manager would then use these settings. It is better to use this instead
of bothering the controller on every connection setup to overwrite the
default settings.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
147e2d59833e994cc99341806a88b9e59be41391 06-Mar-2008 Dave Young <hidave.darkstar@gmail.com> bluetooth: hci_core: defer hci_unregister_sysfs()

Alon Bar-Lev reports:

Feb 16 23:41:33 alon1 usb 3-1: configuration #1 chosen from 1 choice
Feb 16 23:41:33 alon1 BUG: unable to handle kernel NULL pointer
dereference at virtual address 00000008
Feb 16 23:41:33 alon1 printing eip: c01b2db6 *pde = 00000000
Feb 16 23:41:33 alon1 Oops: 0000 [#1] PREEMPT
Feb 16 23:41:33 alon1 Modules linked in: ppp_deflate zlib_deflate
zlib_inflate bsd_comp ppp_async rfcomm l2cap hci_usb vmnet(P)
vmmon(P) tun radeon drm autofs4 ipv6 aes_generic crypto_algapi
ieee80211_crypt_ccmp nf_nat_irc nf_nat_ftp nf_conntrack_irc
nf_conntrack_ftp ipt_MASQUERADE iptable_nat nf_nat ipt_REJECT
xt_tcpudp ipt_LOG xt_limit xt_state nf_conntrack_ipv4 nf_conntrack
iptable_filter ip_tables x_tables snd_pcm_oss snd_mixer_oss
snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device
bluetooth ppp_generic slhc ioatdma dca cfq_iosched cpufreq_powersave
cpufreq_ondemand cpufreq_conservative acpi_cpufreq freq_table uinput
fan af_packet nls_cp1255 nls_iso8859_1 nls_utf8 nls_base pcmcia
snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm nsc_ircc snd_timer
ipw2200 thinkpad_acpi irda snd ehci_hcd yenta_socket uhci_hcd
psmouse ieee80211 soundcore intel_agp hwmon rsrc_nonstatic pcspkr
e1000 crc_ccitt snd_page_alloc i2c_i801 ieee80211_crypt pcmcia_core
agpgart thermal bat!
tery nvram rtc sr_mod ac sg firmware_class button processor cdrom
unix usbcore evdev ext3 jbd ext2 mbcache loop ata_piix libata sd_mod
scsi_mod
Feb 16 23:41:33 alon1
Feb 16 23:41:33 alon1 Pid: 4, comm: events/0 Tainted: P
(2.6.24-gentoo-r2 #1)
Feb 16 23:41:33 alon1 EIP: 0060:[<c01b2db6>] EFLAGS: 00010282 CPU: 0
Feb 16 23:41:33 alon1 EIP is at sysfs_get_dentry+0x26/0x80
Feb 16 23:41:33 alon1 EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX:
f48a2210
Feb 16 23:41:33 alon1 ESI: f72eb900 EDI: f4803ae0 EBP: f4803ae0 ESP:
f7c49efc
Feb 16 23:41:33 alon1 hcid[7004]: HCI dev 0 registered
Feb 16 23:41:33 alon1 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Feb 16 23:41:33 alon1 Process events/0 (pid: 4, ti=f7c48000
task=f7c3efc0 task.ti=f7c48000)
Feb 16 23:41:33 alon1 Stack: f7cb6140 f4822668 f7e71e10 c01b304d
ffffffff ffffffff fffffffe c030ba9c
Feb 16 23:41:33 alon1 f7cb6140 f4822668 f6da6720 f7cb6140 f4822668
f6da6720 c030ba8e c01ce20b
Feb 16 23:41:33 alon1 f6e9dd00 c030ba8e f6da6720 f6e9dd00 f6e9dd00
00000000 f4822600 00000000
Feb 16 23:41:33 alon1 Call Trace:
Feb 16 23:41:33 alon1 [<c01b304d>] sysfs_move_dir+0x3d/0x1f0
Feb 16 23:41:33 alon1 [<c01ce20b>] kobject_move+0x9b/0x120
Feb 16 23:41:33 alon1 [<c0241711>] device_move+0x51/0x110
Feb 16 23:41:33 alon1 [<f9aaed80>] del_conn+0x0/0x70 [bluetooth]
Feb 16 23:41:33 alon1 [<f9aaed99>] del_conn+0x19/0x70 [bluetooth]
Feb 16 23:41:33 alon1 [<c012c1a1>] run_workqueue+0x81/0x140
Feb 16 23:41:33 alon1 [<c02c0c88>] schedule+0x168/0x2e0
Feb 16 23:41:33 alon1 [<c012fc70>] autoremove_wake_function+0x0/0x50
Feb 16 23:41:33 alon1 [<c012c9cb>] worker_thread+0x9b/0xf0
Feb 16 23:41:33 alon1 [<c012fc70>] autoremove_wake_function+0x0/0x50
Feb 16 23:41:33 alon1 [<c012c930>] worker_thread+0x0/0xf0
Feb 16 23:41:33 alon1 [<c012f962>] kthread+0x42/0x70
Feb 16 23:41:33 alon1 [<c012f920>] kthread+0x0/0x70
Feb 16 23:41:33 alon1 [<c0104c2f>] kernel_thread_helper+0x7/0x18
Feb 16 23:41:33 alon1 =======================
Feb 16 23:41:33 alon1 Code: 26 00 00 00 00 57 89 c7 a1 50 1b 3a c0
56 53 8b 70 38 85 f6 74 08 8b 0e 85 c9 74 58 ff 06 8b 56 50 39 fa 74
47 89 fb eb 02 89 c3 <8b> 43 08 39 c2 75 f7 8b 46 08 83 c0 68 e8 98
e7 10 00 8b 43 10
Feb 16 23:41:33 alon1 EIP: [<c01b2db6>] sysfs_get_dentry+0x26/0x80
SS:ESP 0068:f7c49efc
Feb 16 23:41:33 alon1 ---[ end trace aae864e9592acc1d ]---

Defer hci_unregister_sysfs because hci device could be destructed
while hci conn devices still there.

Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Tested-by: Stefan Seyfried <seife@suse.de>
Acked-by: Alon Bar-Lev <alon.barlev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
82453021b8be85171350c695d7ebafe7b517c812 18-Feb-2008 S.Çağlar Onur <caglar@pardus.org.tr> [BLUETOOTH] net/bluetooth/hci_core.c: Use time_* macros

The functions time_before, time_before_eq, time_after, and
time_after_eq are more robust for comparing jiffies against other
values.

So following patch implements usage of the time_after() macro, defined
at linux/jiffies.h, which deals with wrapping correctly

Signed-off-by: S.Çağlar Onur <caglar@pardus.org.tr>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
b6a0dc822497e1c0b9e8c4add270cc27fce48454 20-Oct-2007 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Add support for handling simple eSCO links

With the Bluetooth 1.2 specification the Extended SCO feature for
better audio connections was introduced. So far the Bluetooth core
wasn't able to handle any eSCO connections correctly. This patch
adds simple eSCO support while keeping backward compatibility with
older devices.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
a9de9248064bfc8eb0a183a6a951a4e7b5ca10a4 20-Oct-2007 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Switch from OGF+OCF to using only opcodes

The Bluetooth HCI commands are divided into logical OGF groups for
easier identification of their purposes. While this still makes sense
for the written specification, its makes the code only more complex
and harder to read. So instead of using separate OGF and OCF values
to identify the commands, use a common 16-bit opcode that combines
both values. As a side effect this also reduces the complexity of
OGF and OCF calculations during command header parsing.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
89f2783ded0a4fc98852cb9552bb27a80cd6a41a 09-Sep-2007 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Fix parameter list for event filter command

On device initialization the event filters are cleared. In case of
clearing the filters the extra condition type shall be omitted.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
00ae02f31519e8d6e374424bbdf0c7381489e416 19-Jul-2007 YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> [NET] BLUETOOTH: Fix whitespace errors.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
5b7f990927fe87ad3bec762a33c0e72bcbf6841e 11-Jul-2007 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Add basics to better support and handle eSCO links

To better support and handle eSCO links in the future a bunch of
constants needs to be added and some basic routines need to be
updated. This is the initial step.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
ef222013fc8c1a2fcba5c7ab169be8ffcb778ec4 11-Jul-2007 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Add hci_recv_fragment() helper function

Most drivers must handle fragmented HCI data packets and events. This
patch adds a generic function for their reassembly to the Bluetooth
core layer and thus allows to shrink the complexity of the drivers.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
3ff50b7997fe06cd5d276b229967bb52d6b3b6c1 21-Apr-2007 Stephen Hemminger <shemminger@linux-foundation.org> [NET]: cleanup extra semicolons

Spring cleaning time...

There seems to be a lot of places in the network code that have
extra bogus semicolons after conditionals. Most commonly is a
bogus semicolon after: switch() { }

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
9c70220b73908f64792422a2c39c593c4792f2c5 26-Apr-2007 Arnaldo Carvalho de Melo <acme@redhat.com> [SK_BUFF]: Introduce skb_transport_header(skb)

For the places where we need a pointer to the transport header, it is
still legal to touch skb->h.raw directly if just adding to,
subtracting from or setting it to another layer header.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
badff6d01a8589a1c828b0bf118903ca38627f4e 13-Mar-2007 Arnaldo Carvalho de Melo <acme@redhat.com> [SK_BUFF]: Introduce skb_reset_transport_header(skb)

For the common, open coded 'skb->h.raw = skb->data' operation, so that we can
later turn skb->h.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.

This one touches just the most simple cases:

skb->h.raw = skb->data;
skb->h.raw = {skb_push|[__]skb_pull}()

The next ones will handle the slightly more "complex" cases.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
aca3192cc60d2bf193c2252e45563c32e3117289 26-Mar-2007 YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> [NET] BLUETOOTH: Use cpu_to_le{16,32}() where appropriate.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8e87d14255acffeee36873de226dc25c11b5f46d 09-Feb-2007 YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> [NET] BLUETOOTH: Fix whitespace errors.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
1143e5a6d4d69cd36d44e0184769aa2b17041a10 23-Sep-2006 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Read local version information on device init

The local version information are needed to identify certain feature
sets of devices. They must be read on device init and stored for later
use. It is also possible to access them through the device model.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
25ea6db04a96d7871e7ece27d566f3228d59d932 06-Jul-2006 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Remaining transitions to use kzalloc()

This patch makes the remaining transitions to use kzalloc().

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
a91f2e396f5b32b21d842b4757bc8de5e88eac66 03-Jul-2006 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Use real devices for host controllers

This patch converts the Bluetooth class devices into real devices. The
Bluetooth class is kept and the driver core provides the appropriate
symlinks for backward compatibility.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
04837f6447c7f3ef114cda1ad761822dedbff8cf 03-Jul-2006 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Add automatic sniff mode support

This patch introduces the automatic sniff mode feature. This allows
the host to switch idle connections into sniff mode to safe power.

Signed-off-by: Ulisses Furquim <ulissesf@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
6ab3d5624e172c553004ecc862bfeac16d9d68b7 30-Jun-2006 Jörn Engel <joern@wohnheim.fh-wedel.de> Remove obsolete #include <linux/config.h>

Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
e041c683412d5bf44dc2b109053e3b837b71742d 27-Mar-2006 Alan Stern <stern@rowland.harvard.edu> [PATCH] Notifier chain update: API changes

The kernel's implementation of notifier chains is unsafe. There is no
protection against entries being added to or removed from a chain while the
chain is in use. The issues were discussed in this thread:

http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2

We noticed that notifier chains in the kernel fall into two basic usage
classes:

"Blocking" chains are always called from a process context
and the callout routines are allowed to sleep;

"Atomic" chains can be called from an atomic context and
the callout routines are not allowed to sleep.

We decided to codify this distinction and make it part of the API. Therefore
this set of patches introduces three new, parallel APIs: one for blocking
notifiers, one for atomic notifiers, and one for "raw" notifiers (which is
really just the old API under a new name). New kinds of data structures are
used for the heads of the chains, and new routines are defined for
registration, unregistration, and calling a chain. The three APIs are
explained in include/linux/notifier.h and their implementation is in
kernel/sys.c.

With atomic and blocking chains, the implementation guarantees that the chain
links will not be corrupted and that chain callers will not get messed up by
entries being added or removed. For raw chains the implementation provides no
guarantees at all; users of this API must provide their own protections. (The
idea was that situations may come up where the assumptions of the atomic and
blocking APIs are not appropriate, so it should be possible for users to
handle these things in their own way.)

There are some limitations, which should not be too hard to live with. For
atomic/blocking chains, registration and unregistration must always be done in
a process context since the chain is protected by a mutex/rwsem. Also, a
callout routine for a non-raw chain must not try to register or unregister
entries on its own chain. (This did happen in a couple of places and the code
had to be changed to avoid it.)

Since atomic chains may be called from within an NMI handler, they cannot use
spinlocks for synchronization. Instead we use RCU. The overhead falls almost
entirely in the unregister routine, which is okay since unregistration is much
less frequent that calling a chain.

Here is the list of chains that we adjusted and their classifications. None
of them use the raw API, so for the moment it is only a placeholder.

ATOMIC CHAINS
-------------
arch/i386/kernel/traps.c: i386die_chain
arch/ia64/kernel/traps.c: ia64die_chain
arch/powerpc/kernel/traps.c: powerpc_die_chain
arch/sparc64/kernel/traps.c: sparc64die_chain
arch/x86_64/kernel/traps.c: die_chain
drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list
kernel/panic.c: panic_notifier_list
kernel/profile.c: task_free_notifier
net/bluetooth/hci_core.c: hci_notifier
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain
net/ipv6/addrconf.c: inet6addr_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain
net/netlink/af_netlink.c: netlink_chain

BLOCKING CHAINS
---------------
arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain
arch/s390/kernel/process.c: idle_chain
arch/x86_64/kernel/process.c idle_notifier
drivers/base/memory.c: memory_chain
drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list
drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list
drivers/macintosh/adb.c: adb_client_list
drivers/macintosh/via-pmu.c sleep_notifier_list
drivers/macintosh/via-pmu68k.c sleep_notifier_list
drivers/macintosh/windfarm_core.c wf_client_list
drivers/usb/core/notify.c usb_notifier_list
drivers/video/fbmem.c fb_notifier_list
kernel/cpu.c cpu_chain
kernel/module.c module_notify_list
kernel/profile.c munmap_notifier
kernel/profile.c task_exit_notifier
kernel/sys.c reboot_notifier_list
net/core/dev.c netdev_chain
net/decnet/dn_dev.c: dnaddr_chain
net/ipv4/devinet.c: inetaddr_chain

It's possible that some of these classifications are wrong. If they are,
please let us know or submit a patch to fix them. Note that any chain that
gets called very frequently should be atomic, because the rwsem read-locking
used for blocking chains is very likely to incur cache misses on SMP systems.
(However, if the chain's callout routines may sleep then the chain cannot be
atomic.)

The patch set was written by Alan Stern and Chandra Seetharaman, incorporating
material written by Keith Owens and suggestions from Paul McKenney and Andrew
Morton.

[jes@sgi.com: restructure the notifier chain initialization macros]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1ebb92521d0bc2d4ef772730d29333c06b807191 08-Nov-2005 Marcel Holtmann <marcel@holtmann.org> [Bluetooth]: Add endian annotations to the core

This patch adds the endian annotations to the Bluetooth core.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6516455d3b42b33759a33a8102c1b8b48af4d9c9 28-Oct-2005 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Make more functions static

This patch makes another bunch of functions static.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
a61bbcf28a8cb0ba56f8193d512f7222e711a294 15-Aug-2005 Patrick McHardy <kaber@trash.net> [NET]: Store skb->timestamp as offset to a base timestamp

Reduces skb size by 8 bytes on 64-bit.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
0d48d93947dd9ea21c5cdc76a8581b06a4a39281 10-Aug-2005 Marcel Holtmann <marcel@holtmann.org> [Bluetooth]: Move packet type into the SKB control buffer

This patch moves the usage of packet type into the SKB control
buffer. After this patch it is now possible to shrink the sk_buff
structure and redefine its pkt_type.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
66e8b6c31b9254243afaac8af4135e84e11dd38e 06-Aug-2005 Marcel Holtmann <marcel@holtmann.org> [Bluetooth] Remove unused functions and cleanup symbol exports

This patch removes the unused bt_dump() function and it also removes
its BT_DMP macro. It also unexports the hci_dev_get(), hci_send_cmd()
and hci_si_event() functions.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
5523662c4cd585b892811d7bb3e25d9a787e19b3 26-Apr-2005 Al Viro <viro@parcelfarce.linux.theplanet.co.uk> [NET]: kill gratitious includes of major.h

A lot of places in there are including major.h for no reason
whatsoever. Removed. And yes, it still builds.

The history of that stuff is often amusing. E.g. for net/core/sock.c
the story looks so, as far as I've been able to reconstruct it: we used to
need major.h in net/socket.c circa 1.1.early. In 1.1.13 that need had
disappeared, along with register_chrdev(SOCKET_MAJOR, "socket", &net_fops)
in sock_init(). Include had not. When 1.2 -> 1.3 reorg of net/* had moved
a lot of stuff from net/socket.c to net/core/sock.c, this crap had followed...

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
b453257f057b834fdf9f4a6ad6133598b79bd982 26-Apr-2005 Al Viro <viro@www.linux.org.uk> [PATCH] kill gratitious includes of major.h under net/*

A lot of places in there are including major.h for no reason whatsoever.
Removed. And yes, it still builds.

The history of that stuff is often amusing. E.g. for net/core/sock.c
the story looks so, as far as I've been able to reconstruct it: we used
to need major.h in net/socket.c circa 1.1.early. In 1.1.13 that need
had disappeared, along with register_chrdev(SOCKET_MAJOR, "socket",
&net_fops) in sock_init(). Include had not. When 1.2 -> 1.3 reorg of
net/* had moved a lot of stuff from net/socket.c to net/core/sock.c,
this crap had followed...

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 17-Apr-2005 Linus Torvalds <torvalds@ppc970.osdl.org> Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!