Commit Graph

850 Commits

Author SHA1 Message Date
Gustavo F. Padovan af6bcd8205 Bluetooth: move l2cap_sock_bind()/listen() to l2cap_sock.c
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:43:30 -02:00
Gustavo F. Padovan 554f05bb8a Bluetooth: move l2cap_sock_release() to l2cap_sock.c
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:43:30 -02:00
Gustavo F. Padovan 65390587c7 Bluetooth: move l2cap_sock_ops to l2cap_sock.c
First step to move all l2cap_sock_ops function to l2cap_sock.c

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:43:30 -02:00
Gustavo F. Padovan bb58f747e5 Bluetooth: Initial work for L2CAP split.
This patch tries to do the minimal to move l2cap_sock_create() and its
dependencies to l2cap_sock.c. It create a API to initialize and cleanup
the L2CAP sockets from l2cap_core.c through l2cap_init_sockets() and
l2cap_cleanup_sockets().

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:43:30 -02:00
Gustavo F. Padovan 0a708f8fc4 Bluetooth: Rename l2cap.c to l2cap_core.c
In a preparation to the the L2CAP code split in many files.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:43:15 -02:00
Andrei Emeltchenko d37f50e190 Bluetooth: fix crash by disabling tasklet in sock accept
Crash can happen when tasklet handling connect/disconnect requests
preempts socket accept. Can be reproduced with "l2test -r" on one
side and several "l2test -c -b 1000 -i hci0 -P 10 <bdaddr>" on the
other side.

disable taskets in socket accept and change lock_sock and release_sock
to bh_lock_sock and bh_unlock_sock since we have to use spinlocks and
there is no need to mark sock as owned by user.

...
[ 3555.897247] Unable to handle kernel NULL pointer dereference at virtual
address 000000bc
[ 3555.915039] pgd = cab9c000
[ 3555.917785] [000000bc] *pgd=8bf3d031, *pte=00000000, *ppte=00000000
[ 3555.928314] Internal error: Oops: 17 [#1] PREEMPT
[ 3555.999786] CPU: 0    Not tainted  (2.6.32.21-13874-g67918ef #65)
...
[ 3556.005981] PC is at bt_accept_unlink+0x20/0x58 [bluetooth]
[ 3556.011627] LR is at bt_accept_dequeue+0x3c/0xe8 [bluetooth]
...
[ 3556.161285] [<bf0007fc>] (bt_accept_unlink+0x20/0x58 [bluetooth]) from
[<bf000870>] (bt_accept_dequeue+0x3c/0xe8 [bluetooth])
[ 3556.172729] [<bf000870>] (bt_accept_dequeue+0x3c/0xe8 [bluetooth]) from
[<bf324df8>] (l2cap_sock_accept+0x100/0x15c [l2cap])
[ 3556.184082] [<bf324df8>] (l2cap_sock_accept+0x100/0x15c [l2cap]) from
[<c026a0a8>] (sys_accept4+0x120/0x1e0)
[ 3556.193969] [<c026a0a8>] (sys_accept4+0x120/0x1e0) from [<c002c9a0>]
(ret_fast_syscall+0x0/0x2c)
[ 3556.202819] Code: e5813000 e5901164 e580c160 e580c15c (e1d13bbc)
...

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:08 -02:00
Andrei Emeltchenko 5a08ecceda 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>
2011-02-08 01:40:08 -02:00
Johan Hedberg 17fa4b9dff 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>
2011-02-08 01:40:08 -02:00
Johan Hedberg 980e1a537f Bluetooth: Add support for PIN code handling in the management interface
This patch adds the necessary commands and events needed to communicate
PIN code related actions between the kernel and userspace. This includes
a pin_code_request event as well as pin_code_reply and
pin_code_negative_reply commands.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:07 -02:00
Johan Hedberg a38528f111 Bluetooth: Create common cmd_complete function for mgmt.c
A lot of management code needs to generate command complete events so it
makes sense to have a helper function for this.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:07 -02:00
Johan Hedberg 2784eb41b1 Bluetooth: Add get_connections managment interface command
This patch adds a get_connections command to the management interface.
With this command userspace can get the current list of connected
devices. Typically this command would only be used once when enumerating
existing adapters. After that the connected and disconnected events are
used to track connections.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:07 -02:00
Johan Hedberg 17d5c04cb5 Bluetooth: Add support for connect failed management event
This patch add a new connect failed management event to track failures
in connecting to remote devices. It is particularly useful for security
mode 3 scenarios when we don't have a connected state while pairing but
still need to detect when the connect attempt failed.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:07 -02:00
Johan Hedberg 8962ee74be Bluetooth: Add disconnect managment command
This patch adds a disconnect command to the managment interface. Using
this command user space is able to force the disconnection of connected
devices. The command maps directly to the Disconnect HCI command.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:07 -02:00
Johan Hedberg f7520543ab Bluetooth: Add connected/disconnected management events
This patch adds connected and disconnected managment events to track the
connection status to remote devices. The events map directly to
successful connection complete and disconnection complete HCI events for
ACL links.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:07 -02:00
Johan Hedberg 55ed8ca10f 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>
2011-02-08 01:40:07 -02:00
Johan Hedberg 1aff6f0949 Bluetooth: Add class of device control to the management interface
This patch adds the possibility for user space to fully control the
Class of Device value of local adapters. To control the service class
bits each UUID that's added comes with a service class "hint" which acts
as a mask of bits that the UUID needs to have enabled. The
set_service_cache management command is used to make sure we queue up
all UUID changes as user space initializes its drivers and then send a
single HCI_Write_Class_of_Device command when initialization is
complete.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:06 -02:00
Johan Hedberg d5859e22cd Bluetooth: Implement a more complete adapter initialization sequence
Using the managment interface means that user space doesn't need to do
any HCI command sending at all. This patch moves the remaining
initialization commands from user space to the kernel side. The patch
makes use of the new feature of __hci_request which allows the request
to be dynamically modified while it is ongoing (something that is needed
to react appropriately to the local features and the version of the
adapter).

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:06 -02:00
Johan Hedberg d835060036 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>
2011-02-08 01:40:06 -02:00
Johan Hedberg b0916ea0d9 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>
2011-02-08 01:40:06 -02:00
Johan Hedberg a5040efa20 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>
2011-02-08 01:40:06 -02:00
Johan Hedberg 03b555e119 Bluetooth: Reject pairing requests when in non-pairable mode
This patch adds the necessary logic to act accordingly when the
HCI_PAIRABLE flag is not set. In that case PIN code replies as well as
Secure Simple Pairing requests without a NoBonding requirement need to
be rejected.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:06 -02:00
Johan Hedberg 930e13363f Bluetooth: Implement debugfs support for listing UUIDs
This patch adds a debugfs entry to list the UUIDs that have been
registered through the management interface.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:06 -02:00
Johan Hedberg 2aeb9a1ae0 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>
2011-02-08 01:40:05 -02:00
Johan Hedberg c542a06c29 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>
2011-02-08 01:40:05 -02:00
Johan Hedberg 053f0211d3 Bluetooth: Add send_mode_rsp convenience function for mgmt.c
Several management commands have similar responses but they are not
always sent asynchronously. To enable synchronous sending (from the
managment command handler function) a send_mode_rsp function is added.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:05 -02:00
Johan Hedberg ebc99feba7 Bluetooth: Add flag to track managment controlled adapters
This patch adds a HCI_MGMT flag to track adapters which are under the
control of the management interface. This is needed to make sure that
new kernels will work with old user space versions. I.e. behaviour which
could break old user space versions (but is needed by the management
interface) should not be exhibited when 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>
2011-02-08 01:40:05 -02:00
Johan Hedberg 72a734ec1a Bluetooth: Unify mode related management messages to a single struct
The powered, connectable and discoverable messages all have the same
format. By using a single struct for all of them a lot of code can be
simplified and reused.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:05 -02:00
Johan Hedberg 9fbcbb455d Bluetooth: Add set_connectable management command
This patch adds a set_connectable command as well as a corresponding
event to the management interface. It's mainly useful for setting an
adapter as connectable from a non-initialized state as well as setting
an already initialized adapter as non-connectable (mostly useful for
qualification purposes).

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:05 -02:00
Johan Hedberg 73f22f6238 Bluetooth: Add support for set_discoverable management command
This patch adds a set_discoverable command to the management interface
as well as the corresponding event. The command is used to control the
discoverable state of adapters.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:04 -02:00
Johan Hedberg eec8d2bcc8 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>
2011-02-08 01:40:04 -02:00
Johan Hedberg 5add6af8fc 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>
2011-02-08 01:40:04 -02:00
Johan Hedberg ab81cbf99c 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>
2011-02-08 01:40:04 -02:00
Gustavo F. Padovan 7990681c40 Bluetooth: Fix setting of MTU for ERTM and Streaming Mode
The desired MTU should be sent in an Config_Req for all modes.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:04 -02:00
Andrei Emeltchenko e702112ff6 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>
2011-02-08 01:40:04 -02:00
Jesper Juhl b2c60d42db Bluetooth: Fix failure to release lock in read_index_list()
If alloc_skb() fails in read_index_list() we'll return -ENOMEM without
releasing 'hci_dev_list_lock'.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:04 -02:00
Bao Liang e733fb6208 Bluetooth: Set conn state to BT_DISCONN to avoid multiple responses
This patch fixes a minor issue that two connection responses will be sent
for one L2CAP connection request. If the L2CAP connection request is first
blocked due to security reason and responded with reason "security block",
the state of the connection remains BT_CONNECT2. If a pairing procedure
completes successfully before the ACL connection is down, local host will
send another connection complete response. See the following packets
captured by hcidump.

2010-12-07 22:21:24.928096 < ACL data: handle 12 flags 0x00 dlen 16
    0000: 0c 00 01 00 03 19 08 00  41 00 53 00 03 00 00 00  ........A.S.....
... ...

2010-12-07 22:21:35.791747 > HCI Event: Auth Complete (0x06) plen 3
    status 0x00 handle 12
... ...

2010-12-07 22:21:35.872372 > ACL data: handle 12 flags 0x02 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0054 scid 0x0040 result 0 status 0
      Connection successful

Signed-off-by: Liang Bao <tim.bao@gmail.com>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-02 12:47:59 -02:00
Johan Hedberg 765c2a964b Bluetooth: Fix race condition with conn->sec_level
The conn->sec_level value is supposed to represent the current level of
security that the connection has. However, by assigning to it before
requesting authentication it will have the wrong value during the
authentication procedure. To fix this a pending_sec_level variable is
added which is used to track the desired security level while making
sure that sec_level always represents the current level of security.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-01-19 14:43:11 -02:00
Johan Hedberg d00ef24fc2 Bluetooth: Fix authentication request for L2CAP raw sockets
When there is an existing connection l2cap_check_security needs to be
called to ensure that the security level of the new socket is fulfilled.
Normally l2cap_do_start takes care of this, but that function doesn't
get called for SOCK_RAW type sockets. This patch adds the necessary
l2cap_check_security call to the appropriate branch in l2cap_do_connect.

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>
2011-01-19 14:40:43 -02:00
Johan Hedberg 8556edd32f Bluetooth: Create a unified auth_type evaluation function
The logic for determining the needed auth_type for an L2CAP socket is
rather complicated and has so far been duplicated in
l2cap_check_security as well as l2cap_do_connect. Additionally the
l2cap_check_security code was completely missing the handling of
SOCK_RAW type sockets. This patch creates a unified function for the
evaluation and makes l2cap_do_connect and l2cap_check_security use that
function.

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>
2011-01-19 14:40:43 -02:00
Johan Hedberg 65cf686ee1 Bluetooth: Fix MITM protection requirement preservation
If an existing connection has a MITM protection requirement (the first
bit of the auth_type) then that requirement should not be cleared by new
sockets that reuse the ACL but don't have that requirement.

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>
2011-01-19 14:40:43 -02:00
Johan Hedberg 88644bb9fe Revert "Bluetooth: Update sec_level/auth_type for already existing connections"
This reverts commit 045309820a. That
commit is wrong for two reasons:

- The conn->sec_level shouldn't be updated without performing
authentication first (as it's supposed to represent the level of
security that the existing connection has)

- A higher auth_type value doesn't mean "more secure" like the commit
seems to assume. E.g. dedicated bonding with MITM protection is 0x03
whereas general bonding without MITM protection is 0x04. hci_conn_auth
already takes care of updating conn->auth_type so hci_connect doesn't
need to do it.

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>
2011-01-19 14:40:42 -02:00
Lukáš Turek 683d949a7f Bluetooth: Never deallocate a session when some DLC points to it
Fix a bug introduced in commit 9cf5b0ea3a7f1432c61029f7aaf4b8b338628884:
function rfcomm_recv_ua calls rfcomm_session_put without checking that
the session is not referenced by some DLC. If the session is freed, that
DLC would refer to deallocated memory, causing an oops later, as shown
in this bug report: https://bugzilla.kernel.org/show_bug.cgi?id=15994

Signed-off-by: Lukas Turek <8an@praha12.net>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-01-19 14:40:42 -02:00
Johan Hedberg e2e0cacbd4 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>
2011-01-19 14:40:42 -02:00
David Sterba 4571928fc7 Bluetooth: l2cap: fix misuse of logical operation in place of bitop
CC: Marcel Holtmann <marcel@holtmann.org>
CC: "Gustavo F. Padovan" <padovan@profusion.mobi>
CC: João Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-01-19 14:40:42 -02:00
John W. Linville 782a9e31e8 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/padovan/bluetooth-next-2.6 2011-01-04 14:25:28 -05:00
Gustavo F. Padovan 17f9cc3124 Bluetooth: Improve handling of HCI control channel in bind
Does not allow any channel different of HCI_CHANNEL_RAW and
HCI_CHANNEL_CONTROL to bind.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-22 23:00:34 -02:00
Johan Hedberg 23bb57633d 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>
2010-12-22 22:58:07 -02:00
Johan Hedberg c71e97bfaa 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>
2010-12-22 22:58:00 -02:00
Johan Hedberg f7b64e69c7 Bluetooth: Add read_info management command
This patch implements the read_info command which is used to fetch basic
info about an adapter.

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>
2010-12-22 22:57:51 -02:00
Johan Hedberg faba42eb2a Bluetooth: Add read_index_list management command
This patch implements the read_index_list command through which
userspace can get a list of current adapter indices.

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>
2010-12-22 22:57:44 -02:00
Johan Hedberg 02d981292a Bluetooth: Add read_version management command
This patch implements the initial read_version command that userspace
will use before any other management interface operations.

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>
2010-12-22 22:57:37 -02:00
Johan Hedberg e41d8b4e13 Bluetooth: Add error handling for managment command handlers
The command handlers for bluetooth management messaging should be able
to report errors (such as memory allocation failures) to the higher
levels in the call stack.

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>
2010-12-22 22:56:56 -02:00
John W. Linville 1fcfe76a76 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
Conflicts:
	drivers/net/wireless/iwlwifi/iwl-1000.c
	drivers/net/wireless/iwlwifi/iwl-6000.c
	drivers/net/wireless/iwlwifi/iwl-core.h
2010-12-15 16:33:28 -05:00
Johan Hedberg a40c406cbd Bluetooth: Make hci_send_to_sock usable for management control sockets
In order to send data to management control sockets the function should:

  - skip checks intended for raw HCI data and stack internal events
  - make sure RAW HCI data or stack internal events don't go to
    management control sockets

In order to accomplish this the patch adds a new member to the bluetooth
skb private data to flag skb's that are destined for management control
sockets.

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>
2010-12-07 23:03:39 -02:00
Johan Hedberg 0381101fd6 Bluetooth: Add initial Bluetooth Management interface callbacks
Add initial code for handling Bluetooth Management interface messages.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-07 23:03:38 -02:00
Tracey Dent ff2109f5f9 Net: bluetooth: Makefile: Remove deprecated kbuild goal definitions
Changed Makefile to use <modules>-y instead of <modules>-objs
because -objs is deprecated and not mentioned in
Documentation/kbuild/makefiles.txt.

Signed-off-by: Tracey Dent <tdent48227@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-07 13:52:39 -02:00
Johan Hedberg 183f732c3f Bluetooth: Fix initial RFCOMM DLC security level
Due to commit 63ce0900 connections initiated through TTYs created with
"rfcomm bind ..." would have security level BT_SECURITY_SDP instead of
BT_SECURITY_LOW. This would cause instant connection failure between any
two SSP capable devices due to the L2CAP connect request to RFCOMM being
sent before authentication has been performed. This patch fixes the
regression by always initializing the DLC security level to
BT_SECURITY_LOW.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Acked-by: Luiz Augusto von Dentz <luiz.dentz-von@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-06 15:47:44 -02:00
Gustavo F. Padovan df6bd743b6 Bluetooth: Don't accept ConfigReq if we aren't in the BT_CONFIG state
If such event happens we shall reply with a Command Reject, because we are
not expecting any configure request.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-12-06 15:37:50 -02:00
Andrei Emeltchenko 70f23020e6 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>
2010-12-01 21:04:43 -02:00
Andrei Emeltchenko 894718a6be Bluetooth: clean up l2cap code
Do not initialize static vars to zero, macros with complex values
shall be enclosed with (), remove unneeded braces.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:43 -02:00
Andrei Emeltchenko 285b4e9031 Bluetooth: clean up rfcomm code
Remove extra spaces, assignments in if statement, zeroing static
variables, extra braces. Fix includes.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:43 -02:00
Andrei Emeltchenko 735cbc4784 Bluetooth: clean up sco code
Do not use assignments in IF condition, remove extra spaces

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:43 -02:00
Anderson Lizardo b78d7b4f20 Bluetooth: Fix error handling for l2cap_init()
create_singlethread_workqueue() may fail with errors such as -ENOMEM. If
this happens, the return value is not set to a negative value and the
module load will succeed. It will then crash on module unload because of
a destroy_workqueue() call on a NULL pointer.

Additionally, the _busy_wq workqueue is not being destroyed if any
errors happen on l2cap_init().

Signed-off-by: Anderson Lizardo <anderson.lizardo@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:43 -02:00
Gustavo F. Padovan eeb366564b Bluetooth: Get rid of __rfcomm_get_sock_by_channel()
rfcomm_get_sock_by_channel() was the only user of this function, so I merged
both into rfcomm_get_sock_by_channel(). The socket lock now should be hold
outside of rfcomm_get_sock_by_channel() once we hold and release it inside the
same function now.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:43 -02:00
Gustavo F. Padovan e0f0cb5636 Bluetooth: Get rid of __l2cap_get_sock_by_psm()
l2cap_get_sock_by_psm() was the only user of this function, so I merged
both into l2cap_get_sock_by_psm(). The socket lock now should be hold
outside of l2cap_get_sock_by_psm() once we hold and release it inside the
same function now.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:42 -02:00
Andrei Emeltchenko cc11b9c14d Bluetooth: do not use assignment in if condition
Fix checkpatch errors like:
"ERROR: do not use assignment in if condition"
Simplify code and fix one long line.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:36 -02:00
Andrei Emeltchenko 940a9eea80 Bluetooth: timer check sk is not owned before freeing
In timer context we might delete l2cap channel used by krfcommd.
The check makes sure that sk is not owned. If sk is owned we
restart timer for HZ/5.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:36 -02:00
Andrei Emeltchenko a49184c229 Bluetooth: Check sk is not owned before freeing l2cap_conn
Check that socket sk is not locked in user process before removing
l2cap connection handler.

lock_sock and release_sock do not hold a normal spinlock directly but
instead hold the owner field. This means bh_lock_sock can still execute
even if the socket is "locked". More info can be found here:
http://www.linuxfoundation.org/collaborate/workgroups/networking/socketlocks

krfcommd kernel thread may be preempted with l2cap tasklet which remove
l2cap_conn structure. If krfcommd is in process of sending of RFCOMM reply
(like "RFCOMM UA" reply to "RFCOMM DISC") then kernel crash happens.

...
[  694.175933] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[  694.184936] pgd = c0004000
[  694.187683] [00000000] *pgd=00000000
[  694.191711] Internal error: Oops: 5 [#1] PREEMPT
[  694.196350] last sysfs file: /sys/devices/platform/hci_h4p/firmware/hci_h4p/loading
[  694.260375] CPU: 0    Not tainted  (2.6.32.10 #1)
[  694.265106] PC is at l2cap_sock_sendmsg+0x43c/0x73c [l2cap]
[  694.270721] LR is at 0xd7017303
...
[  694.525085] Backtrace:
[  694.527587] [<bf266be0>] (l2cap_sock_sendmsg+0x0/0x73c [l2cap]) from [<c02f2cc8>] (sock_sendmsg+0xb8/0xd8)
[  694.537292] [<c02f2c10>] (sock_sendmsg+0x0/0xd8) from [<c02f3044>] (kernel_sendmsg+0x48/0x80)

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:36 -02:00
Vasiliy Kulikov d31dbf6e59 Bluetooth: hidp: fix information leak to userland
Structure hidp_conninfo is copied to userland with version, product,
vendor and name fields unitialized if both session->input and session->hid
are NULL.  It leads to leaking of contents of kernel stack memory.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:36 -02:00
Vasiliy Kulikov 3185fbd9d7 Bluetooth: cmtp: fix information leak to userland
Structure cmtp_conninfo is copied to userland with some padding fields
unitialized.  It leads to leaking of contents of kernel stack memory.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:35 -02:00
Vasiliy Kulikov 5520d20f68 Bluetooth: bnep: fix information leak to userland
Structure bnep_conninfo is copied to userland with the field "device"
that has the last elements unitialized.  It leads to leaking of
contents of kernel stack memory.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:35 -02:00
Johan Hedberg 127178d24c Bluetooth: Automate remote name requests
In Bluetooth there are no automatic updates of remote device names when
they get changed on the remote side. Instead, it is a good idea to do a
manual name request when a new connection gets created (for whatever
reason) since at this point it is very cheap (no costly baseband
connection creation needed just for the sake of the name request).

So far userspace has been responsible for this extra name request but
tighter control is needed in order not to flood Bluetooth controllers
with two many commands during connection creation. It has been shown
that some controllers simply fail to function correctly if they get too
many (almost) simultaneous commands during connection creation. The
simplest way to acheive better control of these commands is to move
their sending completely to the kernel side.

This patch inserts name requests into the sequence of events that the
kernel performs during connection creation. It does this after the
remote features have been successfully requested and before any pending
authentication requests are performed. The code will work sub-optimally
with userspace versions that still do the name requesting themselves (it
shouldn't break anything though) so it is recommended to combine this
with a userspace software version that doesn't have automated name
requests.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:35 -02:00
Johan Hedberg 392599b95d Bluetooth: Create a unified authentication request function
This patch adds a single function that's responsible for requesting
authentication for outgoing connections. This is preparation for the
next patch which will add automated name requests and thereby move the
authentication requests to a different location.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:35 -02:00
Johan Hedberg ccd556fe33 Bluetooth: Simplify remote features callback function logic
The current remote and remote extended features event callbacks logic
can be made simpler by using a label and goto statements instead of the
current multiple levels of nested if statements.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:35 -02:00
Gustavo F. Padovan c89ad73722 Bluetooth: Fix not returning proper error in SCO
Return 0 in that situation could lead to errors in the caller.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-11-22 18:23:18 -02:00
Luiz Augusto von Dentz 63ce0900d7 Bluetooth: fix not setting security level when creating a rfcomm session
This cause 'No Bonding' to be used if userspace has not yet been paired
with remote device since the l2cap socket used to create the rfcomm
session does not have any security level set.

Signed-off-by: Luiz Augusto von Dentz <luiz.dentz-von@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>
2010-11-09 00:56:10 -02:00
Gustavo F. Padovan 4f8b691c9f Bluetooth: fix endianness conversion in L2CAP
Last commit added a wrong endianness conversion. Fixing that.

Reported-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-11-09 00:56:09 -02:00
steven miao bfaaeb3ed5 Bluetooth: fix unaligned access to l2cap conf data
In function l2cap_get_conf_opt() and l2cap_add_conf_opt() the address of
opt->val sometimes is not at the edge of 2-bytes/4-bytes, so 2-bytes/4 bytes
access will cause data misalignment exeception.  Use get_unaligned_le16/32
and put_unaligned_le16/32 function to avoid data misalignment execption.

Signed-off-by: steven miao <realmz6@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-11-09 00:56:00 -02:00
Johan Hedberg bdb7524a75 Bluetooth: Fix non-SSP auth request for HIGH security level sockets
When initiating dedicated bonding a L2CAP raw socket with HIGH security
level is used. The kernel is supposed to trigger the authentication
request in this case but this doesn't happen currently for non-SSP
(pre-2.1) devices. The reason is that the authentication request happens
in the remote extended features callback which never gets called for
non-SSP devices. This patch fixes the issue by requesting also
authentiation in the (normal) remote features callback in the case of
non-SSP devices.

This rule is applied only for HIGH security level which might at first
seem unintuitive since on the server socket side MEDIUM is already
enough for authentication. However, for the clients we really want to
prefer the server side to decide the authentication requrement in most
cases, and since most client sockets use MEDIUM it's better to be
avoided on the kernel side for these sockets. The important socket to
request it for is the dedicated bonding one and that socket uses HIGH
security level.

The patch is based on the initial investigation and patch proposal from
Andrei Emeltchenko <endrei.emeltchenko@nokia.com>.

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>
2010-11-09 00:55:27 -02:00
Randy Dunlap 96c99b473a Bluetooth: fix hidp kconfig dependency warning
Fix kconfig dependency warning to satisfy dependencies:

warning: (BT_HIDP && NET && BT && BT_L2CAP && INPUT || USB_HID && HID_SUPPORT && USB && INPUT) selects HID which has unmet direct dependencies (HID_SUPPORT && INPUT)

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-11-09 00:55:27 -02:00
Linus Torvalds 5f05647dd8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1699 commits)
  bnx2/bnx2x: Unsupported Ethtool operations should return -EINVAL.
  vlan: Calling vlan_hwaccel_do_receive() is always valid.
  tproxy: use the interface primary IP address as a default value for --on-ip
  tproxy: added IPv6 support to the socket match
  cxgb3: function namespace cleanup
  tproxy: added IPv6 support to the TPROXY target
  tproxy: added IPv6 socket lookup function to nf_tproxy_core
  be2net: Changes to use only priority codes allowed by f/w
  tproxy: allow non-local binds of IPv6 sockets if IP_TRANSPARENT is enabled
  tproxy: added tproxy sockopt interface in the IPV6 layer
  tproxy: added udp6_lib_lookup function
  tproxy: added const specifiers to udp lookup functions
  tproxy: split off ipv6 defragmentation to a separate module
  l2tp: small cleanup
  nf_nat: restrict ICMP translation for embedded header
  can: mcp251x: fix generation of error frames
  can: mcp251x: fix endless loop in interrupt handler if CANINTF_MERRF is set
  can-raw: add msg_flags to distinguish local traffic
  9p: client code cleanup
  rds: make local functions/variables static
  ...

Fix up conflicts in net/core/dev.c, drivers/net/pcmcia/smc91c92_cs.c and
drivers/net/wireless/ath/ath9k/debug.c as per David
2010-10-23 11:47:02 -07:00
Alan Cox 0587102cf9 tty: icount changeover for other main devices
Again basically cut and paste

Convert the main driver set to use the hooks for GICOUNT

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-10-22 10:20:05 -07:00
David S. Miller 2198a10b50 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	net/core/dev.c
2010-10-21 08:43:05 -07:00
Nathan Holstein d793fe8caa Bluetooth: fix oops in l2cap_connect_req
In error cases when the ACL is insecure or we fail to allocate a new
struct sock, we jump to the "response" label.  If so, "sk" will be
null and the kernel crashes.

Signed-off-by: Nathan Holstein <nathan.holstein@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-17 21:19:19 -02:00
Andrei Emeltchenko 534c92fde7 Bluetooth: clean up rfcomm code
Remove dead code and unused rfcomm thread events

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:53 -03:00
Haijun Liu ab3e571564 Bluetooth: Update conf_state before send config_req out
Update conf_state with L2CAP_CONF_REQ_SENT before send config_req out in
l2cap_config_req().

Signed-off-by: Haijun Liu <haijun.liu@atheros.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:53 -03:00
Gustavo F. Padovan 0175d629e0 Bluetooth: Use the proper error value from bt_skb_send_alloc()
&err points to the proper error set by bt_skb_send_alloc() when it
fails.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:52 -03:00
Gustavo F. Padovan d6b2eb2f89 Bluetooth: make batostr() print in the right order
The Bluetooth core uses the the BD_ADDR in the opposite order from the
human readable order. So we are changing batostr() to print in the
correct order and then removing some baswap(), as they are not needed
anymore.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:52 -03:00
Gustavo F. Padovan cb810a189d Bluetooth: remove unused variable from cmtp
A value was attributed to 'src', but no one was using.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:52 -03:00
Andrei Emeltchenko aae7fe22a8 Bluetooth: check for l2cap header in start fragment
BLUETOOTH SPECIFICATION Version 4.0 [Vol 3] page 36 mentioned
"Note: Start Fragments always begin with the Basic L2CAP header
of a PDU."

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:52 -03:00
Andrei Emeltchenko 8979481328 Bluetooth: check L2CAP length in first ACL fragment
Current Bluetooth code assembles fragments of big L2CAP packets
in l2cap_recv_acldata and then checks allowed L2CAP size in
assemled L2CAP packet (pi->imtu < skb->len).

The patch moves allowed L2CAP size check to the early stage when
we receive the first fragment of L2CAP packet. We do not need to
reserve and keep L2CAP fragments for bad packets.

Updated version after comments from Mat Martineau <mathewm@codeaurora.org>
and Gustavo Padovan <padovan@profusion.mobi>.

Trace below is received when using stress tools sending big
fragmented L2CAP packets.
...
[ 1712.798492] swapper: page allocation failure. order:4, mode:0x4020
[ 1712.804809] [<c0031870>] (unwind_backtrace+0x0/0xdc) from [<c00a1f70>]
(__alloc_pages_nodemask+0x4)
[ 1712.814666] [<c00a1f70>] (__alloc_pages_nodemask+0x47c/0x4d4) from
[<c00a1fd8>] (__get_free_pages+)
[ 1712.824645] [<c00a1fd8>] (__get_free_pages+0x10/0x3c) from [<c026eb5c>]
(__alloc_skb+0x4c/0xfc)
[ 1712.833465] [<c026eb5c>] (__alloc_skb+0x4c/0xfc) from [<bf28c738>]
(l2cap_recv_acldata+0xf0/0x1f8 )
[ 1712.843322] [<bf28c738>] (l2cap_recv_acldata+0xf0/0x1f8 [l2cap]) from
[<bf0094ac>] (hci_rx_task+0x)
...

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:52 -03:00
Johan Hedberg 80e2c88803 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>
2010-10-12 12:44:52 -03:00
Andrei Emeltchenko 5017d8dde1 Bluetooth: remove extra newline from debug output
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@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>
2010-10-12 12:44:51 -03:00
Mat Martineau 6fdf482bb3 Bluetooth: Use a stream-oriented recvmsg with SOCK_STREAM L2CAP sockets.
L2CAP ERTM sockets can be opened with the SOCK_STREAM socket type,
which is a mandatory request for ERTM mode.

However, these sockets still have SOCK_SEQPACKET read semantics when
bt_sock_recvmsg() is used to pull data from the receive queue.  If the
application is only reading part of a frame, then the unread portion
of the frame is discarded.  If the application requests more bytes
than are in the current frame, only the current frame's data is
returned.

This patch utilizes common code derived from RFCOMM's recvmsg()
function to make L2CAP SOCK_STREAM reads behave like RFCOMM reads (and
other SOCK_STREAM sockets in general).  The application may read one
byte at a time from the input stream and not lose any data, and may
also read across L2CAP frame boundaries.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
Mat Martineau 3d7d01dffe Bluetooth: Use common SOCK_STREAM receive code in RFCOMM
To reduce code duplication, have rfcomm_sock_recvmsg() call
bt_sock_stream_recvmsg().  The common bt_sock_stream_recvmsg()
code is nearly identical, with the RFCOMM-specific functionality
for deferred setup and connection unthrottling left in
rfcomm_sock_recvmsg().

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
Mat Martineau 796c86eec8 Bluetooth: Add common code for stream-oriented recvmsg()
This commit adds a bt_sock_stream_recvmsg() function for use by any
Bluetooth code that uses SOCK_STREAM sockets.  This code is copied
from rfcomm_sock_recvmsg() with minimal modifications to remove
RFCOMM-specific functionality and improve readability.

L2CAP (with the SOCK_STREAM socket type) and RFCOMM have common needs
when it comes to reading data.  Proper stream read semantics require
that applications can read from a stream one byte at a time and not
lose any data.  The RFCOMM code already operated on and pulled data
from the underlying L2CAP socket, so very few changes were required to
make the code more generic for use with non-RFCOMM data over L2CAP.

Applications that need more awareness of L2CAP frame boundaries are
still free to use SOCK_SEQPACKET sockets, and may verify that they
connection did not fall back to basic mode by calling getsockopt().

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
Mat Martineau 0fba2558cb Bluetooth: Validate PSM values in calls to connect() and bind()
Valid L2CAP PSMs are odd numbers, and the least significant bit of the
most significant byte must be 0.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
Yuri Kululin 08601469a5 Bluetooth: Fix RFCOMM RPN negotiation
According to the ETSI 3GPP TS 07.10 the default bit rate value for RFCOMM
is 9600 bit/s. Return this bit rate in case of RPN request and accept other
sane bit rates proposed by the sender in RPM command.

Signed-off-by: Yuri Kululin <ext-yuri.kululin@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
David Vrabel 8f1e174223 Bluetooth: HCI devices are either BR/EDR or AMP radios
HCI transport drivers may not know what type of radio an AMP device has
so only say whether they're BR/EDR or AMP devices.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
David S. Miller d122179a3c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	net/core/ethtool.c
2010-10-11 12:30:34 -07:00
Gustavo F. Padovan eaa71b318c Bluetooth: Disallow to change L2CAP_OPTIONS values when connected
L2CAP doesn't permit change like MTU, FCS, TxWindow values while the
connection is alive, we can only set that before the
connection/configuration process. That can lead to bugs in the L2CAP
operation.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-04 19:28:52 -03:00
Gustavo F. Padovan b0239c80fe Revert "Bluetooth: Don't accept ConfigReq if we aren't in the BT_CONFIG state"
This reverts commit 8cb8e6f168.

That commit introduced a regression with the Bluetooth Profile Tuning
Suite(PTS), Reverting this make sure that L2CAP is in a qualificable
state.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-09-30 12:19:35 -03:00
Gustavo F. Padovan fad003b6c8 Bluetooth: Fix inconsistent lock state with RFCOMM
When receiving a rfcomm connection with the old dund deamon a
inconsistent lock state happens. That's because interrupts were already
disabled by l2cap_conn_start() when rfcomm_sk_state_change() try to lock
the spin_lock.

As result we may have a inconsistent lock state for l2cap_conn_start()
after rfcomm_sk_state_change() calls bh_lock_sock() and disable interrupts
as well.

[ 2833.151999]
[ 2833.151999] =================================
[ 2833.151999] [ INFO: inconsistent lock state ]
[ 2833.151999] 2.6.36-rc3 #2
[ 2833.151999] ---------------------------------
[ 2833.151999] inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
[ 2833.151999] krfcommd/2306 [HC0[0]:SC0[0]:HE1:SE1] takes:
[ 2833.151999]  (slock-AF_BLUETOOTH){+.?...}, at: [<ffffffffa00bcb56>] rfcomm_sk_state_change+0x46/0x170 [rfcomm]
[ 2833.151999] {IN-SOFTIRQ-W} state was registered at:
[ 2833.151999]   [<ffffffff81094346>] __lock_acquire+0x5b6/0x1560
[ 2833.151999]   [<ffffffff8109534a>] lock_acquire+0x5a/0x70
[ 2833.151999]   [<ffffffff81392b6c>] _raw_spin_lock+0x2c/0x40
[ 2833.151999]   [<ffffffffa00a5092>] l2cap_conn_start+0x92/0x640 [l2cap]
[ 2833.151999]   [<ffffffffa00a6a3f>] l2cap_sig_channel+0x6bf/0x1320 [l2cap]
[ 2833.151999]   [<ffffffffa00a9173>] l2cap_recv_frame+0x133/0x770 [l2cap]
[ 2833.151999]   [<ffffffffa00a997b>] l2cap_recv_acldata+0x1cb/0x390 [l2cap]
[ 2833.151999]   [<ffffffffa000db4b>] hci_rx_task+0x2ab/0x450 [bluetooth]
[ 2833.151999]   [<ffffffff8106b22b>] tasklet_action+0xcb/0xe0
[ 2833.151999]   [<ffffffff8106b91e>] __do_softirq+0xae/0x150
[ 2833.151999]   [<ffffffff8102bc0c>] call_softirq+0x1c/0x30
[ 2833.151999]   [<ffffffff8102ddb5>] do_softirq+0x75/0xb0
[ 2833.151999]   [<ffffffff8106b56d>] irq_exit+0x8d/0xa0
[ 2833.151999]   [<ffffffff8104484b>] smp_apic_timer_interrupt+0x6b/0xa0
[ 2833.151999]   [<ffffffff8102b6d3>] apic_timer_interrupt+0x13/0x20
[ 2833.151999]   [<ffffffff81029dfa>] cpu_idle+0x5a/0xb0
[ 2833.151999]   [<ffffffff81381ded>] rest_init+0xad/0xc0
[ 2833.151999]   [<ffffffff817ebc4d>] start_kernel+0x2dd/0x2e8
[ 2833.151999]   [<ffffffff817eb2e6>] x86_64_start_reservations+0xf6/0xfa
[ 2833.151999]   [<ffffffff817eb3ce>] x86_64_start_kernel+0xe4/0xeb
[ 2833.151999] irq event stamp: 731
[ 2833.151999] hardirqs last  enabled at (731): [<ffffffff8106b762>] local_bh_enable_ip+0x82/0xe0
[ 2833.151999] hardirqs last disabled at (729): [<ffffffff8106b93e>] __do_softirq+0xce/0x150
[ 2833.151999] softirqs last  enabled at (730): [<ffffffff8106b96e>] __do_softirq+0xfe/0x150
[ 2833.151999] softirqs last disabled at (711): [<ffffffff8102bc0c>] call_softirq+0x1c/0x30
[ 2833.151999]
[ 2833.151999] other info that might help us debug this:
[ 2833.151999] 2 locks held by krfcommd/2306:
[ 2833.151999]  #0:  (rfcomm_mutex){+.+.+.}, at: [<ffffffffa00bb744>] rfcomm_run+0x174/0xb20 [rfcomm]
[ 2833.151999]  #1:  (&(&d->lock)->rlock){+.+...}, at: [<ffffffffa00b9223>] rfcomm_dlc_accept+0x53/0x100 [rfcomm]
[ 2833.151999]
[ 2833.151999] stack backtrace:
[ 2833.151999] Pid: 2306, comm: krfcommd Tainted: G        W   2.6.36-rc3 #2
[ 2833.151999] Call Trace:
[ 2833.151999]  [<ffffffff810928e1>] print_usage_bug+0x171/0x180
[ 2833.151999]  [<ffffffff810936c3>] mark_lock+0x333/0x400
[ 2833.151999]  [<ffffffff810943ca>] __lock_acquire+0x63a/0x1560
[ 2833.151999]  [<ffffffff810948b5>] ? __lock_acquire+0xb25/0x1560
[ 2833.151999]  [<ffffffff8109534a>] lock_acquire+0x5a/0x70
[ 2833.151999]  [<ffffffffa00bcb56>] ? rfcomm_sk_state_change+0x46/0x170 [rfcomm]
[ 2833.151999]  [<ffffffff81392b6c>] _raw_spin_lock+0x2c/0x40
[ 2833.151999]  [<ffffffffa00bcb56>] ? rfcomm_sk_state_change+0x46/0x170 [rfcomm]
[ 2833.151999]  [<ffffffffa00bcb56>] rfcomm_sk_state_change+0x46/0x170 [rfcomm]
[ 2833.151999]  [<ffffffffa00b9239>] rfcomm_dlc_accept+0x69/0x100 [rfcomm]
[ 2833.151999]  [<ffffffffa00b9a49>] rfcomm_check_accept+0x59/0xd0 [rfcomm]
[ 2833.151999]  [<ffffffffa00bacab>] rfcomm_recv_frame+0x9fb/0x1320 [rfcomm]
[ 2833.151999]  [<ffffffff813932bb>] ? _raw_spin_unlock_irqrestore+0x3b/0x60
[ 2833.151999]  [<ffffffff81093acd>] ? trace_hardirqs_on_caller+0x13d/0x180
[ 2833.151999]  [<ffffffff81093b1d>] ? trace_hardirqs_on+0xd/0x10
[ 2833.151999]  [<ffffffffa00bb7f1>] rfcomm_run+0x221/0xb20 [rfcomm]
[ 2833.151999]  [<ffffffff813905e7>] ? schedule+0x287/0x780
[ 2833.151999]  [<ffffffffa00bb5d0>] ? rfcomm_run+0x0/0xb20 [rfcomm]
[ 2833.151999]  [<ffffffff81081026>] kthread+0x96/0xa0
[ 2833.151999]  [<ffffffff8102bb14>] kernel_thread_helper+0x4/0x10
[ 2833.151999]  [<ffffffff813936bc>] ? restore_args+0x0/0x30
[ 2833.151999]  [<ffffffff81080f90>] ? kthread+0x0/0xa0
[ 2833.151999]  [<ffffffff8102bb10>] ? kernel_thread_helper+0x0/0x10

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-09-30 12:19:35 -03:00
Gustavo F. Padovan ccbb84af28 Bluetooth: Simplify L2CAP Streaming mode sending
As we don't have any error control on the Streaming mode, i.e., we don't
need to keep a copy of the skb for later resending we don't need to
call skb_clone() on it.
Then we can go one further here, and dequeue the skb before sending it,
that also means we don't need to look to sk->sk_send_head anymore.

The patch saves memory and time when sending Streaming mode data, so
it is good to mainline.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-09-30 12:19:35 -03:00
Andrei Emeltchenko 8183b775bc Bluetooth: fix MTU L2CAP configuration parameter
When receiving L2CAP negative configuration response with respect
to MTU parameter we modify wrong field. MTU here means proposed
value of MTU that the remote device intends to transmit. So for local
L2CAP socket it is pi->imtu.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-09-30 12:19:35 -03:00
Mat Martineau 8c462b6047 Bluetooth: Only enable L2CAP FCS for ERTM or streaming
This fixes a bug which caused the FCS setting to show L2CAP_FCS_CRC16
with L2CAP modes other than ERTM or streaming.  At present, this only
affects the FCS value shown with getsockopt() for basic mode.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-09-30 12:19:35 -03:00
Eric Dumazet a02cec2155 net: return operator cleanup
Change "return (EXPR);" to "return EXPR;"

return is not a function, parentheses are not required.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-23 14:33:39 -07:00
Eric Dumazet db40980fcd net: poll() optimizations
No need to test twice sk->sk_shutdown & RCV_SHUTDOWN

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-06 18:48:45 -07:00
Mat Martineau cff70fae11 Bluetooth: Fix incorrect setting of remote_tx_win for L2CAP ERTM
remote_tx_win is intended to be set on receipt of an L2CAP
configuration request.  The value is used to determine the size of the
transmit window on the remote side of an ERTM connection, so L2CAP
can stop sending frames when that remote window is full.

An incorrect remote_tx_win value will cause the stack to not fully
utilize the tx window (performance impact), or to overfill the remote
tx window (causing dropped frames or a disconnect).

This patch removes an extra setting of remote_tx_win when a
configuration response is received.  The transmit window has a
different meaning in a response - it is an informational value
less than or equal to the local tx_win.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-08-10 07:59:11 -04:00
Mat Martineau 86b1b26326 Bluetooth: Fix endianness issue with L2CAP MPS configuration
Incoming configuration values must be converted to native CPU order
before use.  This fixes a bug where a little-endian MPS value is
compared to a native CPU value.  On big-endian processors, this
can cause ERTM and streaming mode segmentation to produce PDUs
that are larger than the remote stack is expecting, or that would
produce fragmented skbs that the current FCS code cannot handle.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-08-10 07:59:09 -04:00
Ville Tervo adb08edea0 Bluetooth: Check result code of L2CAP information response
Check result code of L2CAP information response. Otherwise
it would read invalid feature mask and access invalid memory.

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-08-04 07:25:17 -07:00
Gustavo F. Padovan 6340650400 Bluetooth: Don't send RFC for Basic Mode if only it is supported
If the remote side doesn't support Enhanced Retransmission Mode neither
Streaming Mode, we shall not send the RFC option.

Some devices that only supports Basic Mode do not understanding the RFC
option. This patch fixes the regression found with these devices.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-08-04 07:23:00 -07:00
Gustavo F. Padovan 28e9509b12 Bluetooth: Remove __exit from rfcomm_cleanup_ttys()
rfcomm_cleanup_ttys() is also called from rfcomm_init(), so it can't
have __exit.

Reported-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-31 16:09:21 -07:00
David Miller ea4bd8ba80 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>
2010-07-31 16:06:58 -07:00
Gustavo F. Padovan 2f8362afcd Bluetooth: Add __init and __exit marks to RFCOMM
Those annotation save memory and space on the binary. __init code is
discarded just after execute and __exit code is discarded if the module
is built into the kernel image or unload of modules is not allowed.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-27 12:37:27 -07:00
Gustavo F. Padovan da5f6c37ee 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>
2010-07-27 12:33:49 -07:00
Marcel Holtmann e73439d8c0 Bluetooth: Defer SCO setup if mode change is pending
Certain headsets such as the Motorola H350 will reject SCO and eSCO
connection requests while the ACL is transitioning from sniff mode
to active mode. Add synchronization so that SCO and eSCO connection
requests will wait until the ACL has fully transitioned to active mode.

< HCI Command: Exit Sniff Mode (0x02|0x0004) plen 2
    handle 12
> HCI Event: Command Status (0x0f) plen 4
    Exit Sniff Mode (0x02|0x0004) status 0x00 ncmd 1
< HCI Command:  Setup Synchronous Connection (0x01|0x0028) plen 17
    handle 12 voice setting 0x0040
> HCI Event: Command Status (0x0f) plen 4
    Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
> HCI Event: Number of Completed Packets (0x13) plen 5
    handle 12 packets 1
> HCI Event: Mode Change (0x14) plen 6
    status 0x00 handle 12 mode 0x00 interval 0
    Mode: Active
> HCI Event: Synchronous Connect Complete (0x2c) plen 17
    status 0x10 handle 14 bdaddr 00:1A:0E:50:28:A4 type SCO
    Error: Connection Accept Timeout Exceeded

Signed-off-by: Ron Shaffer <rshaffer@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-27 12:29:04 -07:00
Gustavo F. Padovan d1c4a17d58 Bluetooth: Enable L2CAP Extended features by default
Change the enable_ertm param to disable_ertm and default value to 0. That
means that L2CAP Extended features are enabled by default now.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:13 -07:00
Gustavo F. Padovan 893ef97112 Bluetooth: Fix typo in hci_event.c
memmory -> memory

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:13 -07:00
Gustavo F. Padovan 5d8868ff3d Bluetooth: Add Google's copyright to L2CAP
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:12 -07:00
Suraj Sumangala 9981151086 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>
2010-07-21 10:39:12 -07:00
Suraj Sumangala f39a3c0640 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>
2010-07-21 10:39:12 -07:00
Suraj Sumangala 33e882a5f2 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>
2010-07-21 10:39:12 -07:00
Suraj Sumangala cd4c53919e 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>
2010-07-21 10:39:12 -07:00
Gustavo F. Padovan dd135240e8 Bluetooth: Update L2CAP version information
We did some changes on the L2CAP configuration process and its behaviour
is bit different now. That justifies a updated on the L2CAP version.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:12 -07:00
Gustavo F. Padovan ce5706bd69 Bluetooth: Add Copyright notice to L2CAP
Copyright for the time I worked on L2CAP during the Google Summer of Code
program.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:11 -07:00
Gustavo F. Padovan 47731de789 Bluetooth: Keep code under column 80
Purely a cosmetic change, it doesn't change the code flow.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:11 -07:00
Gustavo F. Padovan 89746b856c Bluetooth: Fix bug in kzalloc allocation size
Probably a typo error. We were using the wrong struct to get size.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:11 -07:00
Gustavo F. Padovan e9aeb2ddd4 Bluetooth: Send ConfigReq after send a ConnectionRsp
The extended L2CAP features requires that one should initiate a
ConfigReq after send the ConnectionRsp. This patch changes the behaviour
of the configuration process of our stack.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:11 -07:00
João Paulo Rechi Vita 963cf687e8 Bluetooth: Fix error return on L2CAP-HCI interface.
L2CAP only deals with ACL links. EINVAL should be returned otherwise.

Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:10 -07:00
João Paulo Rechi Vita 7a560e5c99 Bluetooth: Fix error value for wrong FCS.
Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:10 -07:00
João Paulo Rechi Vita 57d3b22bf5 Bluetooth: Fix error return for l2cap_connect_rsp().
Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:10 -07:00
João Paulo Rechi Vita bc766db2ef Bluetooth: Fix error return value on sendmsg.
When the socket is in a bad state EBADFD is more appropriate then EINVAL.

Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:10 -07:00
João Paulo Rechi Vita f9dd11b03c Bluetooth: Fix error return value on sendmsg.
When we try to send a message bigger than the outgoing MTU value
EMSGSIZE (message too long) should be returned.

Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:10 -07:00
João Paulo Rechi Vita 305682e837 Bluetooth: Make l2cap_streaming_send() void.
It doesn't make sense to have a return value since we always set it
to 0.

Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:10 -07:00
João Paulo Rechi Vita 8b0dc6dc82 Bluetooth: Fix l2cap_sock_connect error return.
Return a proper error value if socket is already connected.

Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:10 -07:00
Gustavo F. Padovan 712132eb54 Bluetooth: Improve ERTM local busy handling
Now we also check if can push skb userspace just after receive a new
skb instead of only wait the l2cap_busy_work wake up from time to time
to check the local busy condition.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:09 -07:00
Gustavo F. Padovan 218bb9dfd2 Bluetooth: Add backlog queue to ERTM code
backlog queue is the canonical mechanism to avoid race conditions due
interrupts in bottom half context. After the socket lock is released the
net core take care of push all skb in its backlog queue.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:09 -07:00
Gustavo F. Padovan e0f66218b3 Bluetooth: Remove the send_lock spinlock from ERTM
Using a lock to deal with the ERTM race condition - interruption with
new data from the hci layer - is wrong. We should use the native skb
backlog queue.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:09 -07:00
Gustavo F. Padovan 8cb8e6f168 Bluetooth: Don't accept ConfigReq if we aren't in the BT_CONFIG state
If such event happens we shall reply with a Command Reject, because we are
not expecting any configure request.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:09 -07:00
Gustavo F. Padovan cf6c2c0b9f Bluetooth: Disconnect early if mode is not supported
When mode is mandatory we shall not send connect request and report this
to the userspace as well.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:09 -07:00
Gustavo F. Padovan 2ba13ed678 Bluetooth: Remove check for supported mode
Since now we have checks for the supported mode before on
l2cap_info_rsp we can remove the check for it here.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:08 -07:00
Gustavo F. Padovan 6c2ea7a8f5 Bluetooth: Refuse ConfigRsp with different mode
If our mode is Basic Mode we have to refuse any ConfigRsp that proposes
a different mode.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:08 -07:00
Gustavo F. Padovan 625477523b Bluetooth: Actively send request for Basic Mode
The Profile Tuning Suite requires that we send a RFC containing the
Basic Mode configuration when requesting Basic Mode.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:08 -07:00
Gustavo F. Padovan ae12d52efd Bluetooth: Prefer Basic Mode on receipt of ConfigReq
If we choose to use Basic Mode then we have to refuse the received mode
and propose Basic Mode again.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:08 -07:00
Gustavo F. Padovan 742e519b0d Bluetooth: Disconnect the channel if we don't want the proposed mode
If the device is a STATE 2 then it should disconnect the channel if the
remote device propose a mode different from its mandatory mode.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:08 -07:00
Gustavo F. Padovan 85eb53c6f7 Bluetooth: Change the way we set ERTM mode as mandatory
If the socket type is SOCK_STREAM we set Enhanced Retransmisson Mode or
Streaming Mode as mandatory. That means that we will close the channel
if the other side doesn't support or request the the mandatory mode.
Basic mode can't be set as mandatory.

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>
2010-07-21 10:39:07 -07:00
Gustavo F. Padovan 6498886863 Bluetooth: Tweaks to l2cap_send_i_or_rr_or_rnr() flow
l2cap_send_sframe() already set the F-bit if we set L2CAP_CONN_SEND_FBIT
and unset L2CAP_CONN_SEND_FBIT after send the F-bit.

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>
2010-07-21 10:39:07 -07:00
Gustavo F. Padovan 0e98958d4f Bluetooth: Add debug output to ERTM code
Use the dynamic debug to output info about ERTM protocol stuff.
The following script can be used to enable debug for ERTM:

DEBUGFS="/sys/kernel/debug/dynamic_debug/control"

echo -n 'func l2cap_send_disconn_req +p' > $DEBUGFS
echo -n 'func l2cap_monitor_timeout +p' > $DEBUGFS
echo -n 'func l2cap_retrans_timeout +p' > $DEBUGFS
echo -n 'func l2cap_busy_work  +p' > $DEBUGFS
echo -n 'func l2cap_push_rx_skb +p' > $DEBUGFS
echo -n 'func l2cap_data_channel_iframe +p' > $DEBUGFS
echo -n 'func l2cap_data_channel_rrframe +p' > $DEBUGFS
echo -n 'func l2cap_data_channel_rejframe +p' > $DEBUGFS
echo -n 'func l2cap_data_channel_srejframe +p' > $DEBUGFS
echo -n 'func l2cap_data_channel_rnrframe +p' > $DEBUGFS

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>
2010-07-21 10:39:07 -07:00
Gustavo F. Padovan 9b108fc0cf Bluetooth: Fix ERTM error reporting to the userspace
If any error occurs during transfers we have to tell userspace that
something wrong happened.

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>
2010-07-21 10:39:07 -07:00
Gustavo F. Padovan 4ea727ef9d Bluetooth: Fix missing retransmission action with RR(P=1)
The Bluetooth SIG Profile Tuning Suite Software uses the CSA1 spec
to run the L2CAP tests. The new 3.0 spec has a missing
Retransmit-I-Frames action when the Remote side is Busy.
We still start the retransmission timer if Remote is Busy and unacked
frames > 0. We do everything we did before this change plus the
Retransmission of I-frames.

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>
2010-07-21 10:39:07 -07:00
Gustavo F. Padovan 2600008967 Bluetooth: Check packet FCS earlier
This way, if FCS is enabled and the packet is corrupted, we just drop it
without read it len, which could be corrupted.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:07 -07:00
Gustavo F. Padovan 45d65c46ac Bluetooth: Check the tx_window size on setsockopt
We have to check if the proposed tx_window value is not greater that
maximum value supported.

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>
2010-07-21 10:39:07 -07:00
Gustavo F. Padovan 3cb123d1c0 Bluetooth: Fix handle of received P-bit
ERTM spec mandates that after receive a P-bit we shall send an F-bit in
response. This patch fixes this for retransmitted packets, on
retransmitting we were missing to check for a pending F-bit to be sent.
Also we were missing some annotation to send a F-bit.

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>
2010-07-21 10:39:06 -07:00
Gustavo F. Padovan 2ece3684b4 Bluetooth: Update buffer_seq before retransmit frames
Updating buffer_seq first make us able to ack the last I-frame received.
This is also a requirement of the  Profile Tuning Suite software.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:06 -07:00
Gustavo F. Padovan 7fe9b298c9 Bluetooth: Stop ack_timer if ERTM enters in Local Busy or SREJ_SENT
The ack_timer is implemation specific, disabling it in such situation
avoids some potencial errors in the ERTM protocol.

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>
2010-07-21 10:39:06 -07:00
Ron Shaffer 2d0a03460a Bluetooth: Reassigned copyright to Code Aurora Forum
Qualcomm, Inc. has reassigned rights to Code Aurora Forum. Accordingly,
as files are modified by Code Aurora Forum members, the copyright
statement will be updated.

Signed-off-by: Ron Shaffer <rshaffer@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:06 -07:00
Johan Hedberg 32c2ece5ea Bluetooth: Add debugfs support for showing the blacklist
This patch adds a debugfs blacklist entry for each HCI device which can
be used to list the current content of the blacklist.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:05 -07:00
Johan Hedberg f03585689f 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>
2010-07-21 10:39:05 -07:00
Gustavo F. Padovan 95ffa97827 Bluetooth: Fix L2CAP control bit field corruption
When resending an I-frame, ERTM was reusing the control bits from the last
time it was sent, that was causing a corruption in the new control field
due to it dirty fields.

This patches extracts only the SAR bits from the old field and reuse it to
resend the packet, the others bits should be reset and receive the
updated value.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:05 -07:00
Gustavo F. Padovan c13ffa620f Bluetooth: Proper shutdown ERTM when closing the channel
Fix a crash regarding the Monitor Timeout, it was running even after the
shutdown of the ACL connection, which doesn't make sense.

The same code also fixes another issue, before this patch L2CAP was sending
many Disconnections Requests while we have to send only one.

The issues are related to each other, a expired Monitor Timeout can
trigger a Disconnection Request and then we may have a crash if the link
was already deleted.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:05 -07:00
Nathan Holstein 51893f88dd Bluetooth: Fix bug with ERTM minimum packet length
ERTM and streaming mode L2CAP sockets have no minimum packet length. Only
basic mode connections have minimum length.

Instead, validate the packet containing all necessary control, FCS,
and SAR fields.

The patch fixes the drop of valid packets with length lower than 4.

Signed-off-by: Nathan Holstein <ngh@isomerica.net>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:05 -07:00
João Paulo Rechi Vita bfbacc1155 Bluetooth: Fix SREJ_QUEUE corruption in L2CAP
Since all TxSeq values are modulo, we shall not compare them directly. We
have to compare their offset inside the TxWindow instead.

Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:04 -07:00
Gustavo F. Padovan 6e2b6722ab Bluetooth: Fix bug in l2cap_ertm_send() behavior
This patch makes l2cap_ertm_send() similar to the Send-Data action of
the ERTM spec. We shall not check for RemoteBusy or WAIT_F state
inside l2cap_ertm_send().

Such checks were causing a bug in the retransmission logic of ERTM and
making ERTM stalls until the ACL is dropped.

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>
2010-07-21 10:39:04 -07:00
Gustavo F. Padovan bc1b1f8bee Bluetooth: Only check SAR bits if frame is an I-frame
The SAR bits doesn't make sense for an S-frame. It doesn't use SAR.

Checking SAR for a S-frames can lead to L2CAP errors, it could close
the channel with an invalid packet length, since we was removing the 2
of the of any frame that match SAR start bits, without check if it is
an I-frame.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:04 -07:00
Gustavo F. Padovan 8ff50ec04a Bluetooth: Fix bug with ERTM vars increment
All ERTM operations regarding the txWindow should be modulo 64,
otherwise we confuse the ERTM logic and connections will break.

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>
2010-07-21 10:39:04 -07:00
Gustavo F. Padovan f6337c7711 Bluetooth: Fix drop of packets with invalid req_seq/tx_seq
We shall not use an unsigned var since we are expecting negatives value
there. Using unsigned causes ERTM connection to close due to invalid
ReqSeq numbers.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:04 -07:00
Gustavo F. Padovan 0b31c85ce7 Bluetooth: Remove L2CAP Extended Features from Kconfig
This reverts commit 84fb0a6334 which adds
the L2CAP Extended Features to the Kconfig, that is actually not needed.
One can use other mechanisms to enable L2CAP Extended Features.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:04 -07:00
Gustavo F. Padovan fd059b9bd0 Bluetooth: Remove max_tx and tx_window module paramenters from L2CAP
We don't need these parameters anymore since we have socket options for
them.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:04 -07:00
David S. Miller 11fe883936 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/vhost/net.c
	net/bridge/br_device.c

Fix merge conflict in drivers/vhost/net.c with guidance from
Stephen Rothwell.

Revert the effects of net-2.6 commit 573201f36f
since net-next-2.6 has fixes that make bridge netpoll work properly thus
we don't need it disabled.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-20 18:25:24 -07:00
Ville Tervo 045309820a Bluetooth: Update sec_level/auth_type for already existing connections
Update auth level for already existing connections if it is lower
than required by new connection.

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Reviewed-by: Emeltchenko Andrei <andrei.emeltchenko@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-08 20:35:31 -03:00
Johan Hedberg da213f41cd Bluetooth: Reset the security level after an authentication failure
When authentication fails for a connection the assumed security level
should be set back to BT_SECURITY_LOW so that subsequent connect
attempts over the same link don't falsely assume that security is
adequate enough.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-08 20:35:27 -03:00
Andrei Emeltchenko e501d0553a Bluetooth: Check L2CAP pending status before sending connect request
Due to race condition in L2CAP state machine L2CAP Connection Request
may be sent twice for SDP with the same source channel id. Problems
reported connecting to Apple products, some carkit, Blackberry phones.

...
2010-06-07 21:18:03.651031 < ACL data: handle 1 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 1 scid 0x0040
2010-06-07 21:18:03.653473 > HCI Event: Number of Completed Packets (0x13) plen 5
    handle 1 packets 1
2010-06-07 21:18:03.653808 > HCI Event: Auth Complete (0x06) plen 3
    status 0x00 handle 1
2010-06-07 21:18:03.653869 < ACL data: handle 1 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 1 scid 0x0040
...

Patch uses L2CAP_CONF_CONNECT_PEND flag to mark that L2CAP Connection
Request has been sent already.

Modified version of patch from Ville Tervo.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-08 20:35:23 -03:00
David S. Miller 597e608a84 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-07-07 15:59:38 -07:00
Gustavo F. Padovan 1a61a83ff5 Bluetooth: Bring back var 'i' increment
commit ff6e2163f2 accidentally added a
regression on the bnep code. Fixing it.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-24 22:08:37 -07:00
Eric Dumazet bc10502dba net: use __packed annotation
cleanup patch.

Use new __packed annotation in net/ and include/
(except netfilter)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-03 03:21:52 -07:00
Joe Perches 3fa21e07e6 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>
2010-05-17 23:23:14 -07:00
Marcel Holtmann 2b0b05ddc0 Bluetooth: Fix issues where sk_sleep() helper is needed now
There were some left-overs that used sk->sk_sleep instead of the new
sk_sleep() helper.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 11:33:10 +02:00
Tomas Winkler 7b767cad29 Bluetooth: Use strict_strtoul instead of simple_strtoul
Use strict_strtoul as suggested by checkpatch.pl for more strict input
checking.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 09:34:04 +02:00
Marcel Holtmann f48fd9c8cd 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>
2010-05-10 09:34:03 +02:00
Gustavo F. Padovan 844c097242 Bluetooth: Fix spec error in the RemoteBusy Logic
On the receipt of an RR(P=1) under RemoteBusy set to TRUE(on the RECV
state table) we have to call sendIorRRorRNR(F=1) and just after set
RemoteBusy to False. This leads to a freeze in the sending process since
it's not allowed send data with RemoteBusy set to true and no one
call SendPending-I-Frames after set RemoteBusy to false(The last action
for that event).

Actually sendIorRRorRNR() calls SendPending-I-Frames but at that moment
RemoteBusy is still True and we cannot send any frame, after, no one
calls SendPending-I-Frames again and the sending process stops.

The solution here is to set RemoteBusy to false inside
SendPending-I-Frames just before call SendPending-I-Frames. That will
make SendPending-I-Frames able to send frames. This solution is similar
to what RR(P=0)(F=0) on the RECV table and RR(P=1) on the SREJ_SENT
table do.

Actually doesn't make any sense call SendPending-I-Frames if we can send
any frame, i. e., RemoteBusy is True.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 09:28:53 +02:00
Gustavo F. Padovan 4178ba462a Bluetooth: Prevents buffer overflow on l2cap_ertm_reassembly_sdu()
The checks should be done before the the memcpy to avoid buffer
overflow.

Reported-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 09:28:53 +02:00
Gustavo F. Padovan dfc909befb Bluetooth: Fix race condition on l2cap_ertm_send()
l2cap_ertm_send() can be called both from user context and bottom half
context. The socket locks for that contexts are different, the user
context uses a mutex(which can sleep) and the second one uses a
spinlock_bh. That creates a race condition when we have interruptions on
both contexts at the same time.

The better way to solve this is to add a new spinlock to lock
l2cap_ertm_send() and the vars it access. The other solution was to defer
l2cap_ertm_send() with a workqueue, but we the sending process already
has one defer on the hci layer. It's not a good idea add another one.

The patch refactor the code to create l2cap_retransmit_frames(), then we
encapulate the lock of l2cap_ertm_send() for some call. It also changes
l2cap_retransmit_frame() to l2cap_retransmit_one_frame() to avoid
confusion

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>
2010-05-10 09:28:53 +02:00
Gustavo F. Padovan 6161c0382b Bluetooth: Add wait_queue to wait ack of all sent packets
To guarantee that all packets we sent were received we need to wait for
theirs ack before shutdown the socket.

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>
2010-05-10 09:28:53 +02:00
Gustavo F. Padovan 1890d36bb5 Bluetooth: Implement Local Busy Condition handling
Supports Local Busy condition handling through a waitqueue that wake ups
each 200ms and try to push the packets to the upper layer. If it can
push all the queue then it leaves the Local Busy state.

The patch modifies the behaviour of l2cap_ertm_reassembly_sdu() to
support retry of the push operation.

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>
2010-05-10 09:28:53 +02:00
João Paulo Rechi Vita 9b53350d3c Bluetooth: Completes the I-frame tx_seq check logic on RECV
Add checks for invalid tx_seq and fixes the duplicated tx_seq check.

Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 09:28:53 +02:00
Gustavo F. Padovan 18778a63dd Bluetooth: Implement missing parts of the Invalid Frame Detection
There is a plenty of situation where ERTM shall close the channel, this
commit treats the cases regarding Invalid Frame Detection.
It create one reassembly SDU function for ERTM and other for Streaming
Mode to make the Invalid Frame Detection handling less complex.

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>
2010-05-10 09:28:52 +02:00
Gustavo F. Padovan f11d676da4 Bluetooth: Refactor l2cap_retransmit_frame()
Make the code flow cleaner and changes the function to void.
It also fixes a potential NULL dereference with skb.

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>
2010-05-10 09:28:52 +02:00
Gustavo F. Padovan 9a9c6a3441 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>
2010-05-10 09:28:52 +02:00
Gustavo F. Padovan ff12fd6433 Bluetooth: Fix lockdep annotation on ERTM
A spin_lock_init() call was missing. :)

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>
2010-05-10 09:28:52 +02:00
Gustavo F. Padovan 9b16dc6551 Bluetooth: Check if we really are in WAIT_F when F bit comes
F-bit set should be processed only if we are in the WAIT_F state.

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>
2010-05-10 09:28:52 +02:00
Gustavo F. Padovan a2e12a2a31 Bluetooth: Remove unneeded control vars
Trivial clean up.

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>
2010-05-10 09:28:52 +02:00
Gustavo F. Padovan 0301ef04b5 Bluetooth: Remove set of SrejSaveReqSeq under receipt of REJ frame
That action is not specified by the ERTM spec, so removing it.

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>
2010-05-10 09:28:52 +02:00
Gustavo F. Padovan 59203a21a5 Bluetooth: Fix errors reported by checkpatch.pl
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>
2010-05-10 09:28:51 +02:00
Gustavo F. Padovan 44651b85cc Bluetooth: Don't set control bits to zero first
We can set the SAR bits in the control field directly.

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>
2010-05-10 09:28:51 +02:00
João Paulo Rechi Vita 01760bdde9 Bluetooth: Close L2CAP channel on invalid ReqSeq
Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 09:28:51 +02:00
Gustavo F. Padovan afefdbc4cf Bluetooth: Fix SDU reassembly under SREJ
The code was reusing the control var without its reinitialization.

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>
2010-05-10 09:28:51 +02:00
João Paulo Rechi Vita 0041ecfa30 Bluetooth: Check if mode is supported on getsockopt
Add this check to getsockopt makes possible to fail early instead of
waiting until listen / connect.

Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 09:28:51 +02:00
Gustavo F. Padovan bd3c9e255e Bluetooth: Add SOCK_STREAM support to L2CAP
if enable_ertm is true and we have SOCK_STREAM the default mode will be
ERTM, otherwise Basic Mode.

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>
2010-05-10 09:28:51 +02:00
Gustavo F. Padovan 84fb0a6334 Bluetooth: Add Kconfig option for L2CAP Extended Features
The L2CAP Extended Features are still unstable and under development,
so we are adding them under the EXPERIMENTAL flag to get more feedback
on them. L2CAP Extended Features includes the Enhanced Retransmission
and Streaming Modes, Frame Check Sequence (FCS), and Segmentation and
Reassemby (SAR).

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>
2010-05-10 09:28:51 +02:00
Gustavo F. Padovan 3b1a9f3fa6 Bluetooth: Optimize SREJ_QUEUE append
When the I-frame received is the expected, i.e., its tx_seq is equal to
expected_tx_seq and we are under a SREJ, we can just add it to the tail
of the list. Doing that we change the complexity from O(n) to O(1).

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>
2010-05-10 09:28:50 +02:00
Gustavo F. Padovan 812e737e29 Bluetooth: Fix drop of acked packets on ERTM
l2cap_drop_acked_frames() was droping not sent packets, causing them to
be not transmitted.

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>
2010-05-10 09:28:50 +02:00
Gustavo F. Padovan 0ee0d20855 Bluetooth: Fix crash when monitor timeout expires
The code was crashing due to a invalid access to hci_conn after the
channel disconnect.

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>
2010-05-10 09:28:50 +02:00
Gustavo F. Padovan f6e6b16823 Bluetooth: Fix bug when retransmitting I-frames
If there is no frames to retransmit l2cap was crashing the kernel, now
we check if the queue is empty first.

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>
2010-05-10 09:28:50 +02:00
Gustavo F. Padovan 68d7f0ce91 Bluetooth: Enable option to configure Max Transmission value via sockopt
With the sockopt extension we can set a per-channel MaxTx value.

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>
2010-05-10 09:28:50 +02:00
Gustavo F. Padovan 369ba30264 Bluetooth: Add module parameter for txWindow size on L2CAP
Very useful for testing purposes.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
[jprvita@profusion.mobi: improved parameter description]
Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 09:28:50 +02:00
Gustavo F. Padovan 803020c6fa Bluetooth: Change acknowledgement to use the value of txWindow
Now that we can set the txWindow we need to change the acknowledgement
procedure to ack after each (pi->txWindow/6 + 1). The plus 1 is to avoid
the zero value.
It also renames pi->num_to_ack to a better name: pi->num_acked.

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>
2010-05-10 09:28:50 +02:00
Gustavo F. Padovan 14b5aa71ec Bluetooth: Add sockopt configuration for txWindow on L2CAP
Now we can set/get Transmission Window size via sockopt.

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>
2010-05-10 09:28:49 +02:00
Gustavo F. Padovan 855666cccc Bluetooth: Send Ack after clear the SREJ list
As specified by Bluetooth 3.0 spec we shall send an acknowledgment using
the Send-Ack() after clear the SREJ list.

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>
2010-05-10 09:28:49 +02:00
Gustavo F. Padovan 052897ca50 Bluetooth: Check the SDU size against the MTU value
If the SDU size is greater than the MTU something is wrong, so report
an error.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
[jprvita@profusion.mobi: set err to appropriate errno value]
Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 09:28:49 +02:00
Gustavo F. Padovan 10467e9e9b Bluetooth: Add le16 macro to Retransmission and Monitor Timeouts values
Fix a possible problem with Big Endian machines.

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>
2010-05-10 09:28:48 +02:00
Gustavo F. Padovan 1c7621596d Bluetooth: Fix configuration of the MPS value
We were accepting values bigger than we can accept. This was leading
ERTM to drop packets because of wrong FCS checks.

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>
2010-05-10 09:28:48 +02:00
Gustavo F. Padovan 7b1c0049be Bluetooth: Read RFC conf option on a successful Conf RSP
On Enhanced Retransmission Mode and Streaming Mode a entity can send, on
a successful Conf RSP, new values for the RFC fields. For example, the
entity can send txWindow and MPS values less than the value received on
a Conf REQ.

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>
2010-05-10 09:28:48 +02:00
Gustavo F. Padovan 2fb862e215 Bluetooth: Ignore Tx Window value with Streaming mode
Tx Window value shall not be used with Streaming Mode and the receiver
of the config Request shall ignore its value.

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>
2010-05-10 09:28:48 +02:00
Gustavo F. Padovan c1b4f43be0 Bluetooth: Add timer to Acknowledge I-frames
We ack I-frames on each txWindow/5 I-frames received, but if the sender
stop to send I-frames and it's not a txWindow multiple we can leave some
frames unacked.
So I added a timer to ack I-frames on this case. The timer expires in
200ms.

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>
2010-05-10 09:28:48 +02:00
Gustavo F. Padovan 05fbd89dd4 Bluetooth: Finish implementation for Rec RR (P=1) on ERTM
Now the code handles the case under SREJ_SENT state.

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>
2010-05-10 09:28:48 +02:00
Gustavo F. Padovan 8abb52ee00 Bluetooth: Remove duplicate use of __get_reqseq() macro on L2CAP
tx_seq var already has the value of __get_reqseq().

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>
2010-05-10 09:28:48 +02:00
Gustavo F. Padovan 6e3a59819f Bluetooth: Group the ack of I-frames into l2cap_data_channel_rrframe()
It also fix a bug: we weren't acknowledging I-frames when P=1.
Note that when F=1 we are acknowledging packets before setting
RemoteBusy to False. The spec says we should do that in the opposite
order, but acknowledment of packets doesn't care about RemoteBusy flag
so we can do that in the order we want.

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>
2010-05-10 09:28:47 +02:00
Gustavo F. Padovan 99b0d4b7b0 Bluetooth: Handle all cases of receipt of RNR-frames into L2CAP
We weren't handling the receipt under SREJ_SENT state table.
It also introduce l2cap_send_srejtail(). It will be used in the nexts
commits too.

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>
2010-05-10 09:28:47 +02:00
Gustavo F. Padovan e072745f4a Bluetooth: Split l2cap_data_channel_sframe()
Create a function for each type fo S-frame and avoid a lot of nested
code.

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>
2010-05-10 09:28:47 +02:00
Gustavo F. Padovan 73edaa9933 Bluetooth: Add Recv RR (P=0)(F=0) for SREJ_SENT state on ERTM
This finishes the implementation of Recv RR (P=0)(F=0) for the Enhanced
Retransmission Mode on L2CAP.

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>
2010-05-10 09:28:47 +02:00
Gustavo F. Padovan f0946ccfc7 Bluetooth: Move set of P-bit to l2cap_send_sframe()
Abstract the send of of P-bit and avoids code duplication like we
did with the setting of F-bit.

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>
2010-05-10 09:28:47 +02:00
Gustavo F. Padovan 9e917af13d Bluetooth: Implement SendAck() Action on ERTM.
Shall be used to ack received frames, It must decide type of
acknowledgment between a RR frame, a RNR frame or transmission of
pending I-frames.
It also modifies l2cap_ertm_send() to report the number of frames sent.

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>
2010-05-10 09:28:47 +02:00
Gustavo F. Padovan 36f2fd585f Bluetooth: Check if SDU size is greater than MTU on L2CAP
After reassembly the SDU we need to check his size. It can't overflow
the MTU size.

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>
2010-05-10 09:28:47 +02:00
Gustavo F. Padovan 277ffbe362 Bluetooth: Check the minimum {I,S}-frame size into L2CAP
All packets with size fewer than the minimum specified is dropped.
Note that the size of the l2cap basic header, FCS and SAR fields are
already subtracted of len at the moment of the size check.

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>
2010-05-10 09:28:46 +02:00
Gustavo F. Padovan 1d8f5d1691 Bluetooth: Support case with F bit set under WAIT_F state.
On receipt of a F=1 under WAIT_F state ERTM shall stop monitor timer and
start retransmission timer (if there are unacked frames).

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>
2010-05-10 09:28:46 +02:00
Gustavo F. Padovan d5392c8f1e Bluetooth: Implement 'Send IorRRorRNR' event
After receive a RR with P bit set ERTM shall use this funcion to choose
what type of frame to reply with F bit = 1.

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>
2010-05-10 09:28:46 +02:00
Gustavo F. Padovan e8235c6bdd Bluetooth: Use a l2cap_pinfo struct instead l2cap_pi() macro
Trivial clean up.

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>
2010-05-10 09:28:46 +02:00
Gustavo F. Padovan d1daa091e8 Bluetooth: Fix ACL MTU issue
ERTM and Streaming Modes was having problems when the ACL MTU is lower
than MPS. The 'minus 10' is to take in account the header and fcs
lenghts.

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>
2010-05-10 09:28:46 +02:00
Gustavo F. Padovan 7dffe42102 Bluetooth: Fix expected_tx_seq calculation on L2CAP
All operation related to the txWindow should be modulo 64.

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>
2010-05-10 09:28:46 +02:00
Gustavo F. Padovan faaebd192e Bluetooth: Fix memory leak of S-frames into L2CAP
l2cap_data_channel do not free the S-frame, so we free it here.

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>
2010-05-10 09:28:45 +02:00
Gustavo F. Padovan c69163e9ed Bluetooth: Move specific Basic Mode code to the right place
Inside "case L2CAP_MODE_BASIC:" we don't need to check for sk_type and
L2CAP mode. So only the length check is fine.

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>
2010-05-10 09:28:45 +02:00
Gustavo F. Padovan b9dbdbc1f4 Bluetooth: Trivial clean ups to SCO
Remove extra braces and labels, break over column 80 lines, etc

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 09:28:45 +02:00
Gustavo F. Padovan 0d861d8b8e 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>
2010-05-10 09:28:45 +02:00
David S. Miller 7ef527377b Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-05-02 22:02:06 -07:00
Dan Carpenter 477fffb082 bluetooth: handle l2cap_create_connless_pdu() errors
l2cap_create_connless_pdu() can sometimes return ERR_PTR(-ENOMEM) or
ERR_PTR(-EFAULT).

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-27 17:03:36 -07:00
Eric Dumazet aa39514516 net: sk_sleep() helper
Define a new function to return the waitqueue of a "struct sock".

static inline wait_queue_head_t *sk_sleep(struct sock *sk)
{
	return sk->sk_sleep;
}

Change all read occurrences of sk_sleep by a call to this function.

Needed for a future RCU conversion. sk_sleep wont be a field directly
available.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-20 16:37:13 -07:00
David S. Miller 871039f02f Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/stmmac/stmmac_main.c
	drivers/net/wireless/wl12xx/wl1271_cmd.c
	drivers/net/wireless/wl12xx/wl1271_main.c
	drivers/net/wireless/wl12xx/wl1271_spi.c
	net/core/ethtool.c
	net/mac80211/scan.c
2010-04-11 14:53:53 -07:00
David S. Miller 4a35ecf8bf Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/bonding/bond_main.c
	drivers/net/via-velocity.c
	drivers/net/wireless/iwlwifi/iwl-agn.c
2010-04-06 23:53:30 -07:00
Linus Torvalds cb4361c1dc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (37 commits)
  smc91c92_cs: fix the problem of "Unable to find hardware address"
  r8169: clean up my printk uglyness
  net: Hook up cxgb4 to Kconfig and Makefile
  cxgb4: Add main driver file and driver Makefile
  cxgb4: Add remaining driver headers and L2T management
  cxgb4: Add packet queues and packet DMA code
  cxgb4: Add HW and FW support code
  cxgb4: Add register, message, and FW definitions
  netlabel: Fix several rcu_dereference() calls used without RCU read locks
  bonding: fix potential deadlock in bond_uninit()
  net: check the length of the socket address passed to connect(2)
  stmmac: add documentation for the driver.
  stmmac: fix kconfig for crc32 build error
  be2net: fix bug in vlan rx path for big endian architecture
  be2net: fix flashing on big endian architectures
  be2net: fix a bug in flashing the redboot section
  bonding: bond_xmit_roundrobin() fix
  drivers/net: Add missing unlock
  net: gianfar - align BD ring size console messages
  net: gianfar - initialize per-queue statistics
  ...
2010-04-06 08:34:06 -07:00
Jiri Pirko 22bedad3ce net: convert multicast list to list_head
Converts the list and the core manipulating with it to be the same as uc_list.

+uses two functions for adding/removing mc address (normal and "global"
 variant) instead of a function parameter.
+removes dev_mcast.c completely.
+exposes netdev_hw_addr_list_* macros along with __hw_addr_* functions for
 manipulation with lists on a sandbox (used in bonding and 80211 drivers)

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-03 14:22:15 -07:00
Changli Gao 6503d96168 net: check the length of the socket address passed to connect(2)
check the length of the socket address passed to connect(2).

Check the length of the socket address passed to connect(2). If the
length is invalid, -EINVAL will be returned.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
----
net/bluetooth/l2cap.c | 3 ++-
net/bluetooth/rfcomm/sock.c | 3 ++-
net/bluetooth/sco.c | 3 ++-
net/can/bcm.c | 3 +++
net/ieee802154/af_ieee802154.c | 3 +++
net/ipv4/af_inet.c | 5 +++++
net/netlink/af_netlink.c | 3 +++
7 files changed, 20 insertions(+), 3 deletions(-)
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-01 17:26:01 -07:00
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Andrei Emeltchenko c2c77ec83b Bluetooth: Fix kernel crash on L2CAP stress tests
Added very simple check that req buffer has enough space to
fit configuration parameters. Shall be enough to reject packets
with configuration size more than req buffer.

Crash trace below

[ 6069.659393] Unable to handle kernel paging request at virtual address 02000205
[ 6069.673034] Internal error: Oops: 805 [#1] PREEMPT
...
[ 6069.727172] PC is at l2cap_add_conf_opt+0x70/0xf0 [l2cap]
[ 6069.732604] LR is at l2cap_recv_frame+0x1350/0x2e78 [l2cap]
...
[ 6070.030303] Backtrace:
[ 6070.032806] [<bf1c2880>] (l2cap_add_conf_opt+0x0/0xf0 [l2cap]) from
[<bf1c6624>] (l2cap_recv_frame+0x1350/0x2e78 [l2cap])
[ 6070.043823]  r8:dc5d3100 r7:df2a91d6 r6:00000001 r5:df2a8000 r4:00000200
[ 6070.050659] [<bf1c52d4>] (l2cap_recv_frame+0x0/0x2e78 [l2cap]) from
[<bf1c8408>] (l2cap_recv_acldata+0x2bc/0x350 [l2cap])
[ 6070.061798] [<bf1c814c>] (l2cap_recv_acldata+0x0/0x350 [l2cap]) from
[<bf0037a4>] (hci_rx_task+0x244/0x478 [bluetooth])
[ 6070.072631]  r6:dc647700 r5:00000001 r4:df2ab740
[ 6070.077362] [<bf003560>] (hci_rx_task+0x0/0x478 [bluetooth]) from
[<c006b9fc>] (tasklet_action+0x78/0xd8)
[ 6070.087005] [<c006b984>] (tasklet_action+0x0/0xd8) from [<c006c160>]

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Gustavo F. Padovan <gustavo@padovan.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-03-21 05:49:36 +01:00
Marcel Holtmann aef7d97cc6 Bluetooth: Convert debug files to actually use debugfs instead of sysfs
Some of the debug files ended up wrongly in sysfs, because at that point
of time, debugfs didn't exist. Convert these files to use debugfs and
also seq_file. This patch converts all of these files at once and then
removes the exported symbol for the Bluetooth sysfs class.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-03-21 05:49:35 +01:00
Marcel Holtmann 101545f6fe Bluetooth: Fix potential bad memory access with sysfs files
When creating a high number of Bluetooth sockets (L2CAP, SCO
and RFCOMM) it is possible to scribble repeatedly on arbitrary
pages of memory. Ensure that the content of these sysfs files is
always less than one page. Even if this means truncating. The
files in question are scheduled to be moved over to debugfs in
the future anyway.

Based on initial patches from Neil Brown and Linus Torvalds

Reported-by: Neil Brown <neilb@suse.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-03-21 05:49:32 +01:00
Jiri Pirko ff6e2163f2 net: convert multiple drivers to use netdev_for_each_mc_addr, part7
In mlx4, using char * to store mc address in private structure instead.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-16 21:23:25 -07:00
Linus Torvalds d89b218b80 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (108 commits)
  bridge: ensure to unlock in error path in br_multicast_query().
  drivers/net/tulip/eeprom.c: fix bogus "(null)" in tulip init messages
  sky2: Avoid rtnl_unlock without rtnl_lock
  ipv6: Send netlink notification when DAD fails
  drivers/net/tg3.c: change the field used with the TG3_FLAG_10_100_ONLY constant
  ipconfig: Handle devices which take some time to come up.
  mac80211: Fix memory leak in ieee80211_if_write()
  mac80211: Fix (dynamic) power save entry
  ipw2200: use kmalloc for large local variables
  ath5k: read eeprom IQ calibration values correctly for G mode
  ath5k: fix I/Q calibration (for real)
  ath5k: fix TSF reset
  ath5k: use fixed antenna for tx descriptors
  libipw: split ieee->networks into small pieces
  mac80211: Fix sta_mtx unlocking on insert STA failure path
  rt2x00: remove KSEG1ADDR define from rt2x00soc.h
  net: add ColdFire support to the smc91x driver
  asix: fix setting mac address for AX88772
  ipv6 ip6_tunnel: eliminate unused recursion field from ip6_tnl{}.
  net: Fix dev_mc_add()
  ...
2010-03-13 14:50:18 -08:00
Andi Kleen 28812fe11a driver-core: Add attribute argument to class_attribute show/store
Passing the attribute to the low level IO functions allows all kinds
of cleanups, by sharing low level IO code without requiring
an own function for every piece of data.

Also drivers can extend the attributes with own data fields
and use that in the low level function.

This makes the class attributes the same as sysdev_class attributes
and plain attributes.

This will allow further cleanups in drivers.

Full tree sweep converting all users.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-07 17:04:48 -08:00
Marcel Holtmann d4612cb86e Bluetooth: Use single_open() for inquiry cache within debugfs
The inquiry cache information in debugfs should be using seq_file support
and not allocating memory on the stack for the string. Since the usage of
these information is really seldom, using single_open() for it is good
enough.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-03 01:04:38 -08:00