Граф коммитов

442 Коммитов

Автор SHA1 Сообщение Дата
Mat Martineau e6a3ee6e8a Bluetooth: Do not retransmit data during a channel move
Do not retransmit previously-sent data when a "receiver ready" s-frame
with the "final" flag is received during a move.

The ERTM state machines will resynchronize at the end of a channel
move, and the state machine needs to avoid state changes during a
move.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:25:55 -02:00
Mat Martineau a549574da3 Bluetooth: Ignore BR/EDR packet size constraints when fragmenting for AMP
When operating over BR/EDR, ERTM accounts for the maximum over-the-air
packet size when setting the PDU size.  AMP controllers do not use the
same over-the-air packets, so the PDU size should only be based on the
HCI MTU of the AMP controller.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:25:50 -02:00
Mat Martineau 36c86c8566 Bluetooth: Configure appropriate timeouts for AMP controllers
The L2CAP spec recommends specific retransmit and monitor timeouts for
ERTM channels that are on AMP controllers.  These timeouts are
calculated from the AMP controller's best effort flush timeout.

BR/EDR controllers use the default retransmit and monitor timeouts.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:25:42 -02:00
Mat Martineau b99e13ade7 Bluetooth: Do not send data during channel move
Outgoing ERTM data is queued during a channel move.  The ERTM state
machine is partially reset at the start of a move, and must be
resynchronized with the remote state machine at the end of the move.
Data is not sent so that there are no state transitions between the
partial reset and the resync.

Streaming mode frames are dropped during a move.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:24:56 -02:00
Mat Martineau d5f8a75d88 Bluetooth: Flag ACL frames as complete for AMP controllers
AMP controllers expect to transmit only "complete" ACL frames.  These
frames have both the "start" and "cont" bits set.  AMP does not allow
fragmented ACLs.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:24:34 -02:00
Mat Martineau 8eb200bd2f Bluetooth: Handle physical link completion
Several different actions may be taken when an AMP physical link
becomes available.  A channel being created on an AMP controller must
continue the connection process.  A channel being moved needs to
either send a move request or a move response.  A failed physical link
will revert to using a BR/EDR controller if possible.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:24:16 -02:00
Mat Martineau 3fd71a0a43 Bluetooth: Add move confirm response handling
The move confirm response concludes the channel move command sequence.
Receipt of this command indicates that data may begin to flow again.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:23:48 -02:00
Mat Martineau 1500109bbc Bluetooth: Add logical link confirm
The logical link confirm callback is executed when the AMP controller
completes its logical link setup.  During a channel move, a newly
formed logical link allows a move responder to send a move channel
response.  A move initiator will send a move channel confirm.  A
failed logical link will end the channel move and send an appropriate
response or confirm command indicating a failure.

If the channel is being created on an AMP controller, L2CAP
configuration is completed after the logical link is set up.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:21:41 -02:00
Mat Martineau 5b155ef960 Bluetooth: Move channel response
The move response command includes a result code indicating
"pending", "success", or "failure" status.  A pending result is
received when the remote address is still setting up a physical link,
and will be followed by success or failure.  On success, logical link
setup will proceed.  On failure, the move is stopped.  The receiver of
a move channel response must always follow up by sending a move
channel confirm command.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:20:54 -02:00
Mat Martineau 5f3847a478 Bluetooth: Add move channel confirm handling
After sending a move channel response, a move responder waits for a
move channel confirm command.  If the received command has a
"confirmed" result the move is proceeding, and "unconfirmed" means the
move has failed and the channel will not change controllers.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:15:03 -02:00
Mat Martineau 32b32735ca Bluetooth: Add new ERTM receive states for channel move
Two new states are required to implement channel moves with the ERTM
receive state machine.

The "WAIT_P" state is used by a move responder to wait for a "poll"
flag after a move is completed (success or failure).  "WAIT_F" is
similarly used by a move initiator to wait for a "final" flag when the
move is completing.  In either state, the reqseq value in the
poll/final frame tells the state machine exactly which frame should be
expected next.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:12:04 -02:00
Mat Martineau 02b0fbb92d Bluetooth: Channel move request handling
On receipt of a channel move request, the request must be validated
based on the L2CAP mode, connection state, and controller
capabilities.  ERTM channels must have their state machines cleared
and transmission paused while the channel move takes place.

If the channel is being moved to an AMP controller then
an AMP physical link must be prepared.  Moving the channel back to
BR/EDR proceeds immediately.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:09:15 -02:00
Mat Martineau b1a130b7d3 Bluetooth: Lookup channel structure based on DCID
Processing a move channel request involves getting the channel
structure using the destination channel ID.  Previous code could only
look up using the source channel ID.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-24 00:01:53 -02:00
Mat Martineau 5909cf30f3 Bluetooth: Remove unnecessary intermediate function
Resolves a conflict resolution issue in "Bluetooth: Fix L2CAP coding
style".  The remaining connect and create channel response handler is
renamed to better reflect its use for both response types.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-23 23:59:52 -02:00
Mat Martineau 1700915fef Bluetooth: Add L2CAP create channel request handling
The L2CAP create channel request is very similar to an L2CAP connect
request, but it has an additional parameter for the controller ID.  If
the controller id is 0, the channel is set up on the BR/EDR controller
(just like a connect request).  Using a valid high speed controller ID
will cause the channel to be initially created on that high speed
controller.  While the L2CAP data will be initially routed over the
AMP controller, the L2CAP fixed signaling channel only uses BR/EDR.

When a create channel request is received for a high speed controller,
a pending response is always sent first.  After the high speed
physical and logical links are complete a success response will be
sent.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-23 23:58:52 -02:00
Mat Martineau 08333283a7 Bluetooth: Add new l2cap_chan struct members for high speed channels
An L2CAP channel using high speed continues to be associated with a
BR/EDR l2cap_conn, while also tracking an additional hci_conn
(representing a physical link on a high speed controller) and hci_chan
(representing a logical link).  There may only be one physical link
between two high speed controllers.  Each physical link may contain
several logical links, with each logical link representing a channel
with specific quality of service.

During a channel move, the destination channel id, current move state,
and role (initiator vs. responder) are tracked and used by the channel
move state machine.  The ident value associated with a move request
must also be stored in order to use it in later move responses.

The active channel is stored in local_amp_id.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-23 23:57:02 -02:00
John W. Linville bc27d5f143 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next 2012-10-19 15:22:27 -04:00
Andrei Emeltchenko 56f6098441 Bluetooth: Zero bredr pointer when chan is deleted
If BREDR L2CAP chan is deleted and this chan is the channel through
which High Speed traffic is routed to AMP then zero pointer to
the chan in amp_mgr to prevent accessing it.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-15 09:49:58 -03:00
Andrei Emeltchenko 79de886d9c Bluetooth: Send EFS Conf Rsp only for BR/EDR chan
Do not send EFS Configuration Response for High Speed channel yet.
It will be sent after receiving Logical Link Complete event.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-15 09:47:44 -03:00
Andrei Emeltchenko 1d13a254e1 Bluetooth: AMP: Drop packets when no l2cap conn exist
High Speed hci_conn should always have l2cap_conn associated with it.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-15 09:47:11 -03:00
Andrei Emeltchenko d73a098804 Bluetooth: AMP: Handle complete frames in l2cap
Check flags type in switch statement and handle new frame
type ACL_COMPLETE used for High Speed data over AMP.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-15 09:46:39 -03:00
Gustavo Padovan 300229f962 Bluetooth: Rename __l2cap_connect() to l2cap_connect()
Use of "__" usually means we need to call the function with a lock held,
which is not the case here.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-15 09:44:24 -03:00
Gustavo Padovan 2dc4e5105f Bluetooth: Add chan->ops->defer()
When DEFER_SETUP is set defer() will trigger an authorization
request to the userspace.

l2cap_chan_no_defer() is meant to be used when one does not want to
support DEFER_SETUP (A2MP for example).

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-15 09:43:29 -03:00
Gustavo Padovan 644912e18a Bluetooth: Move bt_accept_enqueue() to l2cap_sock.c
This is part of the move the parent socket usage to l2cap_sock.c

The change is safe when it comes to locking, bt_accept_enqueue() is still
protected by the parent socket lock inside the
l2cap_sock_new_connection_cb() code.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-15 09:42:52 -03:00
Gustavo Padovan b699ec0d99 Bluetooth: Call ops->teardown() without checking for NULL
Users that don't implement teardown() should use l2cap_chan_no_teardown()

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-12 18:30:20 +08:00
Gustavo Padovan d117773ce5 Bluetooth: Use locked l2cap_state_change()
No one was protecting the state set in l2cap_send_disconn_req()

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-12 18:21:11 +08:00
Gustavo Padovan 1d8b1fd55a Bluetooth: use l2cap_chan_set_err()
l2cap_conn_unreliable() doesn't take the sk lock, so we need to take it
using l2cap_chan_set_err().

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-12 18:21:00 +08:00
Gustavo Padovan 8bcde1f2ab Bluetooth: Remove GFP_ATOMIC usage from l2cap_core.c
Since we change the Bluetooth core to run in process context we don't need
to use GFP_ATOMIC in many of places we were using it. The we just replace
by GFP_KERNEL.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-12 18:18:47 +08:00
Gustavo Padovan 2d7928184c Bluetooth: Fix L2CAP coding style
Follow the net subsystem coding style

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-12 18:06:05 +08:00
Mat Martineau 4c89b6aad5 Bluetooth: Factor out common L2CAP connection code
L2CAP connect requests and create channel requests share a significant
amount of code.  This change moves common code to a new function.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-12 17:12:19 +08:00
Mat Martineau f5a2598d80 Bluetooth: Process create response and connect response identically
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-12 17:11:45 +08:00
Andrei Emeltchenko 8936fa6d1c Bluetooth: L2CAP: Fix using default Flush Timeout for EFS
There are two Flush Timeouts: one is old Flush Timeot Option
which is 2 octets and the second is Flush Timeout inside EFS
which is 4 octets long.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-08 20:40:12 +08:00
Andrei Emeltchenko dcc042d56f Bluetooth: AMP: Use block_mtu for AMP controller
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-08 06:22:23 +08:00
David S. Miller a248afdc1b Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
John W. Linville says:

====================
Here is another batch of updates intended for 3.7...

Highlights include an hci_connect re-write in Bluetooth, HCI/LLC
layer separation in NFC, removal of the raw pn544 NFC driver, NFC LLCP
raw sockets support, improved IBSS auth frame handling in mac80211,
full-MAC AP mode notification support in mac80211, a lot of attention
paid to brcmfmac, and the usual level of updates to iwlwifi, ath9k,
mwifiex, and rt2x00, and various other updates.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-30 02:30:16 -04:00
David S. Miller 6a06e5e1bb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/team/team.c
	drivers/net/usb/qmi_wwan.c
	net/batman-adv/bat_iv_ogm.c
	net/ipv4/fib_frontend.c
	net/ipv4/route.c
	net/l2tp/l2tp_netlink.c

The team, fib_frontend, route, and l2tp_netlink conflicts were simply
overlapping changes.

qmi_wwan and bat_iv_ogm were of the "use HEAD" variety.

With help from Antonio Quartulli.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-28 14:40:49 -04:00
Andrei Emeltchenko 29d8a5909b Bluetooth: Factor out Create Configuration Response
Use function to factor out similar code. For BR/EDR send EFS
Configuration Response immediately, for HS response will be sent
after receiving HCI Logical Link Complete event in the following
patches.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27 18:13:38 -03:00
Andrei Emeltchenko fcb73338ed Bluetooth: Use %pMR in sprintf/seq_printf instead of batostr
Instead of old unsafe batostr function use %pMR print specifier
for printing Bluetooth addresses in sprintf and seq_printf
statements.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27 18:10:15 -03:00
Andrei Emeltchenko 6ed93dc642 Bluetooth: Use %pMR in debug instead of batostr
Instead of old unsafe batostr function use %pMR print specifier
for printing Bluetooth addresses in debug and error statements.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27 18:10:00 -03:00
Andrei Emeltchenko 2766be48a7 Bluetooth: A2MP: Add fallback to normal l2cap init sequence
When there is no remote AMP controller found fallback to normal
L2CAP sequence.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27 17:31:52 -03:00
Andrei Emeltchenko 93c3e8f5c9 Bluetooth: Choose connection based on capabilities
Choose which L2CAP connection to establish by checking support
for HS and remote side supported features.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27 17:18:36 -03:00
John W. Linville 791ef39cd1 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next 2012-09-24 14:39:16 -04:00
Andrei Emeltchenko aad3d0e343 Bluetooth: Fix freeing uninitialized delayed works
When releasing L2CAP socket which is in BT_CONFIG state l2cap_chan_close
invokes l2cap_send_disconn_req which cancel delayed works which are only
set in BT_CONNECTED state with l2cap_ertm_init. Add state check before
cancelling those works.

...
[ 9668.574372] [21085] l2cap_sock_release: sock cd065200, sk f073e800
[ 9668.574399] [21085] l2cap_sock_shutdown: sock cd065200, sk f073e800
[ 9668.574411] [21085] l2cap_chan_close: chan f073ec00 state BT_CONFIG sk f073e800
[ 9668.574421] [21085] l2cap_send_disconn_req: chan f073ec00 conn ecc16600
[ 9668.574441] INFO: trying to register non-static key.
[ 9668.574443] the code is fine but needs lockdep annotation.
[ 9668.574446] turning off the locking correctness validator.
[ 9668.574450] Pid: 21085, comm: obex-client Tainted: G           O 3.5.0+ #57
[ 9668.574452] Call Trace:
[ 9668.574463]  [<c10a64b3>] __lock_acquire+0x12e3/0x1700
[ 9668.574468]  [<c10a44fb>] ? trace_hardirqs_on+0xb/0x10
[ 9668.574476]  [<c15e4f60>] ? printk+0x4d/0x4f
[ 9668.574479]  [<c10a6e38>] lock_acquire+0x88/0x130
[ 9668.574487]  [<c1059740>] ? try_to_del_timer_sync+0x60/0x60
[ 9668.574491]  [<c1059790>] del_timer_sync+0x50/0xc0
[ 9668.574495]  [<c1059740>] ? try_to_del_timer_sync+0x60/0x60
[ 9668.574515]  [<f8aa1c23>] l2cap_send_disconn_req+0xe3/0x160 [bluetooth]
...

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-18 20:07:04 -03:00
David S. Miller b48b63a1f6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	net/netfilter/nfnetlink_log.c
	net/netfilter/xt_LOG.c

Rather easy conflict resolution, the 'net' tree had bug fixes to make
sure we checked if a socket is a time-wait one or not and elide the
logging code if so.

Whereas on the 'net-next' side we are calculating the UID and GID from
the creds using different interfaces due to the user namespace changes
from Eric Biederman.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-15 11:43:53 -04:00
John W. Linville fac805f8c1 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2012-09-07 15:07:55 -04:00
Vinicius Costa Gomes cc110922da Bluetooth: Change signature of smp_conn_security()
To make it clear that it may be called from contexts that may not have
any knowledge of L2CAP, we change the connection parameter, to receive
a hci_conn.

This also makes it clear that it is checking the security of the link.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-27 08:07:18 -07:00
David S. Miller 1304a7343b Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-08-22 14:21:38 -07:00
Syam Sidhardhan 144ad33020 Bluetooth: Use kref for l2cap channel reference counting
This patch changes the struct l2cap_chan and associated code to use
kref api for object refcounting and freeing.

Suggested-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Jaganath Kanakkassery <jaganath.k@samsung.com>
Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-21 14:54:41 -03:00
Syam Sidhardhan ab19516a50 Bluetooth: debug: Correct the PSM printing
Earlier we were printing chan->psm before assigning any value.

Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-21 14:54:41 -03:00
Szymon Janc a9ea3ed9b7 Bluetooth: Fix legacy pairing with some devices
Some devices e.g. some Android based phones don't do SDP search before
pairing and cancel legacy pairing when ACL is disconnected.

PIN Code Request event which changes ACL timeout to HCI_PAIRING_TIMEOUT
is only received after remote user entered PIN.

In that case no L2CAP is connected so default HCI_DISCONN_TIMEOUT
(2 seconds) is being used to timeout ACL connection. This results in
problems with legacy pairing as remote user has only few seconds to
enter PIN before ACL is disconnected.

Increase disconnect timeout for incomming connection to
HCI_PAIRING_TIMEOUT if SSP is disabled and no linkey exists.

To avoid keeping ACL alive for too long after SDP search set ACL
timeout back to HCI_DISCONN_TIMEOUT when L2CAP is connected.

2012-07-19 13:24:43.413521 < HCI Command: Create Connection (0x01|0x0005) plen 13
    bdaddr 00:02:72:D6:6A:3F ptype 0xcc18 rswitch 0x01 clkoffset 0x0000
    Packet type: DM1 DM3 DM5 DH1 DH3 DH5
2012-07-19 13:24:43.425224 > HCI Event: Command Status (0x0f) plen 4
    Create Connection (0x01|0x0005) status 0x00 ncmd 1
2012-07-19 13:24:43.885222 > HCI Event: Role Change (0x12) plen 8
    status 0x00 bdaddr 00:02:72:D6:6A:3F role 0x01
    Role: Slave
2012-07-19 13:24:44.054221 > HCI Event: Connect Complete (0x03) plen 11
    status 0x00 handle 42 bdaddr 00:02:72:D6:6A:3F type ACL encrypt 0x00
2012-07-19 13:24:44.054313 < HCI Command: Read Remote Supported Features (0x01|0x001b) plen 2
    handle 42
2012-07-19 13:24:44.055176 > HCI Event: Page Scan Repetition Mode Change (0x20) plen 7
    bdaddr 00:02:72:D6:6A:3F mode 0
2012-07-19 13:24:44.056217 > HCI Event: Max Slots Change (0x1b) plen 3
    handle 42 slots 5
2012-07-19 13:24:44.059218 > HCI Event: Command Status (0x0f) plen 4
    Read Remote Supported Features (0x01|0x001b) status 0x00 ncmd 0
2012-07-19 13:24:44.062192 > HCI Event: Command Status (0x0f) plen 4
    Unknown (0x00|0x0000) status 0x00 ncmd 1
2012-07-19 13:24:44.067219 > HCI Event: Read Remote Supported Features (0x0b) plen 11
    status 0x00 handle 42
    Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
2012-07-19 13:24:44.067248 < HCI Command: Read Remote Extended Features (0x01|0x001c) plen 3
    handle 42 page 1
2012-07-19 13:24:44.071217 > HCI Event: Command Status (0x0f) plen 4
    Read Remote Extended Features (0x01|0x001c) status 0x00 ncmd 1
2012-07-19 13:24:44.076218 > HCI Event: Read Remote Extended Features (0x23) plen 13
    status 0x00 handle 42 page 1 max 1
    Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
2012-07-19 13:24:44.076249 < HCI Command: Remote Name Request (0x01|0x0019) plen 10
    bdaddr 00:02:72:D6:6A:3F mode 2 clkoffset 0x0000
2012-07-19 13:24:44.081218 > HCI Event: Command Status (0x0f) plen 4
    Remote Name Request (0x01|0x0019) status 0x00 ncmd 1
2012-07-19 13:24:44.105214 > HCI Event: Remote Name Req Complete (0x07) plen 255
    status 0x00 bdaddr 00:02:72:D6:6A:3F name 'uw000951-0'
2012-07-19 13:24:44.105284 < HCI Command: Authentication Requested (0x01|0x0011) plen 2
    handle 42
2012-07-19 13:24:44.111207 > HCI Event: Command Status (0x0f) plen 4
    Authentication Requested (0x01|0x0011) status 0x00 ncmd 1
2012-07-19 13:24:44.112220 > HCI Event: Link Key Request (0x17) plen 6
    bdaddr 00:02:72:D6:6A:3F
2012-07-19 13:24:44.112249 < HCI Command: Link Key Request Negative Reply (0x01|0x000c) plen 6
    bdaddr 00:02:72:D6:6A:3F
2012-07-19 13:24:44.115215 > HCI Event: Command Complete (0x0e) plen 10
    Link Key Request Negative Reply (0x01|0x000c) ncmd 1
    status 0x00 bdaddr 00:02:72:D6:6A:3F
2012-07-19 13:24:44.116215 > HCI Event: PIN Code Request (0x16) plen 6
    bdaddr 00:02:72:D6:6A:3F
2012-07-19 13:24:48.099184 > HCI Event: Auth Complete (0x06) plen 3
    status 0x13 handle 42
    Error: Remote User Terminated Connection
2012-07-19 13:24:48.179182 > HCI Event: Disconn Complete (0x05) plen 4
    status 0x00 handle 42 reason 0x13
    Reason: Remote User Terminated Connection

Cc: stable@vger.kernel.org
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-06 15:19:36 -03:00
Jaganath Kanakkassery 4af66c691f Bluetooth: Free the l2cap channel list only when refcount is zero
Move the l2cap channel list chan->global_l under the refcnt
protection and free it based on the refcnt.

Signed-off-by: Jaganath Kanakkassery <jaganath.k@samsung.com>
Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Reviewed-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-06 15:02:58 -03:00
Jaganath Kanakkassery 3064837289 Bluetooth: Move l2cap_chan_hold/put to l2cap_core.c
Refactor the code in order to use the l2cap_chan_destroy()
from l2cap_chan_put() under the refcnt protection.

Signed-off-by: Jaganath Kanakkassery <jaganath.k@samsung.com>
Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Reviewed-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-06 15:02:58 -03:00
Andrei Emeltchenko 9e66463127 Bluetooth: Make connect / disconnect cfm functions return void
Return values are never used because callers hci_proto_connect_cfm
and hci_proto_disconn_cfm return void.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-06 15:02:58 -03:00
Andrei Emeltchenko 78eb2f985c Bluetooth: Fix processing A2MP chan in security_cfm
Do not process A2MP channel in l2cap_security_cfm

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-06 15:02:56 -03:00
Mat Martineau c20f8e35ca Bluetooth: Use tx window from config response for ack timing
This change addresses an L2CAP ERTM throughput problem when a remote
device does not fully utilize the available transmit window.

The L2CAP ERTM transmit window size determines the maximum number of
unacked frames that may be outstanding at any time. It is configured
separately for each direction of an ERTM connection. Each side sends a
configuration request with a tx_win field indicating how many unacked
frames it is capable of receiving before sending an ack. The
configuration response's tx_win field shows how many frames the
transmitter will actually send before waiting for an ack.

It's important to trace both the actual transmit window (to check for
validity of incoming frames) and the number of frames that the
transmitter will send before waiting (to send acks at the appropriate
time). Now there are separate tx_win and ack_win values. ack_win is
updated based on configuration responses, and is used to determine
when acks are sent.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-15 12:18:29 -03:00
Andrei Emeltchenko 89d8b40789 Bluetooth: debug: Add debug to l2cap_security_cfm
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-10 15:42:07 -03:00
Andrei Emeltchenko ad0ac6ca5f Bluetooth: debug: Print CID and PSM in hex format
Correct places where CID and PSM were printed as int. For CID: 0x%4.4x
is used and for PSM: 0x%2.2x.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-10 15:41:50 -03:00
Andrei Emeltchenko b44006728d Bluetooth: debug: Correct types specifiers for L2CAP
Avoid unneeded type conversion by correcting type specifiers in debug
statements for L2CAP.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-10 15:40:50 -03:00
Gustavo Padovan b82c29d81d Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2012-06-26 08:36:30 -07:00
Szymon Janc 8f321f853e Bluetooth: Fix using uninitialized option in RFCMode
If remote device sends bogus RFC option with invalid length,
undefined options values are used. Fix this by using defaults when
remote misbehaves.

This also fixes the following warning reported by gcc 4.7.0:

net/bluetooth/l2cap_core.c: In function 'l2cap_config_rsp':
net/bluetooth/l2cap_core.c:3302:13: warning: 'rfc.max_pdu_size' may be used uninitialized in this function [-Wmaybe-uninitialized]
net/bluetooth/l2cap_core.c:3266:24: note: 'rfc.max_pdu_size' was declared here
net/bluetooth/l2cap_core.c:3298:25: warning: 'rfc.monitor_timeout' may be used uninitialized in this function [-Wmaybe-uninitialized]
net/bluetooth/l2cap_core.c:3266:24: note: 'rfc.monitor_timeout' was declared here
net/bluetooth/l2cap_core.c:3297:25: warning: 'rfc.retrans_timeout' may be used uninitialized in this function [-Wmaybe-uninitialized]
net/bluetooth/l2cap_core.c:3266:24: note: 'rfc.retrans_timeout' was declared here
net/bluetooth/l2cap_core.c:3295:2: warning: 'rfc.mode' may be used uninitialized in this function [-Wmaybe-uninitialized]
net/bluetooth/l2cap_core.c:3266:24: note: 'rfc.mode' was declared here

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-11 23:50:28 -03:00
Gustavo Padovan cbe461c526 Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
Conflicts:
	net/bluetooth/hci_event.c
2012-06-11 22:36:42 -03:00
Johan Hedberg d06cc416f5 Bluetooth: Fix deadlock and crash when SMP pairing times out
The l2cap_conn_del function tries to cancel_sync the security timer, but
when it's called from the timeout function itself a deadlock occurs.
Subsequently the "hcon->l2cap_data = NULL" that's supposed to protect
multiple calls to l2cap_conn_del never gets cleared and when the
connection finally drops we double free's etc which will crash the
kernel.

This patch fixes the issue by using the HCI_CONN_LE_SMP_PEND for
protecting against this. The same flag is also used for the same purpose
in other places in the SMP code.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-08 03:23:56 -03:00
Andre Guedes 6fcb06a28d Bluetooth: Change default MTU for L2CAP ATT channel
This patch changes the default MTU value for L2CAP ATT fixed channel
to L2CAP_DEFAULT_MTU (672 octets).

Differently from others L2CAP channels, in L2CAP ATT fixed channel
there is no MTU negotiation. The MTU value for that channel is up to
the L2CAP implementation. The only restriction in L2CAP spec is the
MTU value must not be less than 23 octets.

At ATT protocol level (on top of L2CAP), we have the ATT_MTU which
defines the maximum size of any ATT message sent between client and
server. GATT profile defines ATT_MTU default value to 23 octets. If
a GATT based profile wants to use ATT_MTU greater than 23 octets
(e.g. HID over GATT profile), it should negotiate a new value by
executing the GATT Exchange MTU sub-procedure.

Thus, in order to support any value of ATT_MTU negotiated at ATT
protocol level, our L2CAP implementation should have L2CAP ATT
fixed channel MTU equal or greater than ATT_MAX_MTU (512 octets).

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:15 +03:00
Gustavo Padovan f0f6279976 Bluetooth: Remove unused err var from l2cap_segment_sdu()
Trivial fix, let the code cleaner.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-06-05 06:34:15 +03:00
Gustavo Padovan ba7aa64fe2 Bluetooth: Create function to return the ERTM header size
Simplify the handling of different ERTM header size. We were the same
check in some places of the code, and more is expected to come, so just
replace them with a function.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-06-05 06:34:15 +03:00
Andrei Emeltchenko 6810fca724 Bluetooth: Make l2cap_att_channel return void
l2cap_att_channel always returns 0 which is not used.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:14 +03:00
Andrei Emeltchenko 84104b241d Bluetooth: Make l2cap_conless_channel return void
l2cap_conless_channel always return 0 which is not used.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:14 +03:00
Andrei Emeltchenko 13ca56e053 Bluetooth: Make l2cap_data_channel return void
l2cap_data_channel always return 0 which is not used anywhere,
make it void function.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:14 +03:00
Andrei Emeltchenko 3cabbfdad3 Bluetooth: A2MP: Do not reference hci_conn
Make A2MP channel special channel which do not reference hci_conn.
This prevents from keeping ACL connection open when all L2CAP
channels got closed.

hci_conn_hold and hci_conn_put are not reference counts on the
hci_conn structure in the typical way.  They are reference counts for
the ACL.  When you do the last hci_conn_put, the ACL is disconnected
after a timeout.

Reported-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:14 +03:00
Andrei Emeltchenko fd83e2c27c Bluetooth: Do not check func ready existence
Functions will be always defined and in case not implemented as
dummy __no_func.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:14 +03:00
Andrei Emeltchenko 97e8e89d2d Bluetooth: A2MP: Manage incoming connections
Handle incoming A2MP connection by creating AMP manager and
processing A2MP messages.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:14 +03:00
Andrei Emeltchenko 416fa7527d Bluetooth: A2MP: Handling fixed channels
A2MP fixed channel do not have sk

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:13 +03:00
Andrei Emeltchenko 466f8004f3 Bluetooth: A2MP: Create A2MP channel
Create and initialize fixed A2MP channel

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:11 +03:00
Andrei Emeltchenko 0181a70f54 Bluetooth: trivial: Use defined PSMLEN instead of magic
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:11 +03:00
Gustavo Padovan 2dfa1003cc Bluetooth: check for already existent channel before create new one
Move this check to before the channel time creation simplifies the code
and avoid memory allocation if the channel already exist.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:11 +03:00
Gustavo Padovan 538266929e Bluetooth: Move check for backlog size to l2cap_sock.c
Remove socket specific code from l2cap_core.c

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:11 +03:00
Gustavo Padovan 0797e01d87 Bluetooth: Use chan->state instead of sk->sk_state
These vars are kept in sync so we can use chan->state here.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:11 +03:00
Andrei Emeltchenko 54a59aa2b5 Bluetooth: Add l2cap_chan->ops->ready()
This move socket specific code to l2cap_sock.c.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:11 +03:00
Andrei Emeltchenko c0df7f6e06 Bluetooth: Move clean up code and set of SOCK_ZAPPED to l2cap_sock.c
This remove a bit more of socket code from l2cap core, this calls set the
SOCK_ZAPPED and do some clean up depending on the socket state.

Reported-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:10 +03:00
Gustavo Padovan 80b9802795 Bluetooth: Use chan as parameters for l2cap chan ops
Use chan instead of void * makes more sense here.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:10 +03:00
Gustavo Padovan 6754e0df13 Bluetooth: Use l2cap_chan_ready() in LE path
This replace code in l2cap_le_conn_ready() by a similar code in
l2cap_chan_ready().

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:10 +03:00
Gustavo Padovan 2f84a2e6a6 Bluetooth: Remove extra l2cap_state_change(BT_CONNECTED)
This is already performed inside l2cap_chan_ready(), so we don't need it
here again.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:10 +03:00
Gustavo Padovan 35d401df3d Bluetooth: Get a more accurate L2CAP PDU len
Both FCS and Extended header might be or might not be present in a ERTM
channel.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:09 +03:00
Andrei Emeltchenko ac73498cbb Bluetooth: Use __constant when dealing with constants
__constant_cpu_to_le16() is the right go here.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:09 +03:00
Andrei Emeltchenko 2983fd6824 Bluetooth: Define and use PSM identifiers
Define assigned Protocol and Service Multiplexor (PSM) identifiers
and use them instead of magic numbers.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:09 +03:00
Mat Martineau 2d369359f1 Bluetooth: Send a configuration request after security confirmation
Sometimes an ACL link must be raised to a higher security level after
an L2CAP connection is requested, but before a connection response is
sent.  In this case, a connection response sent by L2CAP was not
immediately followed by a configuration request.  Other code paths do
send this configuration request right away.  It was possible for the
connection to stall while L2CAP waited for the remote device (like
PTS) to trigger the configuration process.

Here is an abbreviated hcidump of the failure case with PTS:

1337806446.051982 > ACL data: handle 43 flags 0x02 dlen 10
    L2CAP(s): Info req: type 2
1337806446.052050 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x000000b8
1337806446.595320 > ACL data: handle 43 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 4097 scid 0x0041
1337806446.595673 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 0
1337806446.595679 < ACL data: handle 43 flags 0x00 dlen 10
    L2CAP(s): Info req: type 2
1337806446.669835 > ACL data: handle 43 flags 0x02 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x00000028
1337806446.669899 < HCI Command: Authentication Requested (0x01|0x0011) plen 2
1337806446.669906 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 1
<security setup here>
1337806446.769888 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 0 status 0

At this point, the connection stalls and no further messages are sent
on the L2CAP signaling channel.  No data is received either.

If we immediately send a configuration request after a successful connect
response, the connection completes:

1337724090.041162 > ACL data: handle 43 flags 0x02 dlen 10
    L2CAP(s): Info req: type 2
1337724090.041236 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x000000b8
1337724090.597128 > ACL data: handle 43 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 4097 scid 0x0041
1337724090.597236 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 0
1337724090.597244 < ACL data: handle 43 flags 0x00 dlen 10
    L2CAP(s): Info req: type 2
1337724090.660842 > ACL data: handle 43 flags 0x02 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x00000028
1337724090.660926 < HCI Command: Authentication Requested (0x01|0x0011) plen 2
1337724090.660934 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 1
<security setup here>
1337724090.755162 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 0 status 0
1337724090.755171 < ACL data: handle 43 flags 0x00 dlen 23
    L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 11
1337724091.361847 > ACL data: handle 43 flags 0x02 dlen 29
    L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 15
1337724091.863808 > ACL data: handle 43 flags 0x02 dlen 23
    L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 11
1337724091.863882 < ACL data: handle 43 flags 0x00 dlen 29
    L2CAP(s): Config rsp: scid 0x0041 flags 0x00 result 0 clen 15
1337724092.683745 > ACL data: handle 43 flags 0x02 dlen 12
    L2CAP(d): cid 0x0040 len 8 [psm 4097]
      0000: 00 00 11 22 33 44 34 2f                           ..."3D4/

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:08 +03:00
Andrei Emeltchenko 59e54bd15d Bluetooth: Define L2CAP conf continuation flag
Define Continuation flag which the only flag used from Flags field
in L2CAP Configuration Request and Response.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:08 +03:00
Gustavo Padovan 8c520a5992 Bluetooth: Remove unnecessary headers include
Most of the include were unnecessary or already included by some other
header.
Replace module.h by export.h where possible.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:08 +03:00
Andrei Emeltchenko 5325e5bb86 Bluetooth: Preserve L2CAP flags values
Previous callers of l2cap_build_conf_rsp in l2cap_config_req use
flags instead of continuation flag hardcoded value. It does not change
logic and preserve future possible flags.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:07 +03:00
Gustavo Padovan d660366d53 Bluetooth: Remove dead int returns
These functions were returning always 0, we just make then void.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:06 +03:00
Gustavo Padovan be4aad05af Bluetooth: Remove double check for BT_CONNECTED
The same check is done just before call l2cap_streaming_send()

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:06 +03:00
Andrei Emeltchenko 401bb1f768 Bluetooth: Silent sparse warnings
Silence warnings below:

net/bluetooth/l2cap_core.c:1662:24: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:1662:27: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:1683:24: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:1683:27: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:2260:46: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:2574:33: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:2581:33: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:4556:24: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:4556:27: warning: Using plain integer
as NULL pointer

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:06 +03:00
Gustavo Padovan ee556f662c Bluetooth: Do not purge queue in Basic Mode
chan->tx_q is only initialized if we use ERTM or Streaming mode.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:05 +03:00
Mat Martineau d1de6d46dc Bluetooth: Enable ERTM by default
This enables the new receive and transmit state machines.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:05 +03:00
Mat Martineau 273759e2c3 Bluetooth: Set txwin values for streaming mode
The transmit window values must be configured for streaming mode, even
though streaming mode does not have a window.  This enables use of
extended headers when the transmit window socket option is set to 64
or larger.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:05 +03:00
Mat Martineau 6ea0048575 Bluetooth: Remove unneccesary inline
Let the compiler decide if inlining is appropriate.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:05 +03:00
Mat Martineau 0362520bf9 Bluetooth: Simplify the ERTM ack timeout
Since l2cap_send_ack can trigger extra actions like sending iframes,
don't call it.  Just send an RR or RNR frame if an ack needs sending.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:05 +03:00
Mat Martineau 80909e04de Bluetooth: Use the ERTM transmit state machine from timeout handlers
Different states have different actions for retransmit and monitor
timeouts, so remove the logic for those actions from the timer handlers.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:04 +03:00
Mat Martineau 4239d16f36 Bluetooth: Check rules when setting retransmit or monitor timers
The ERTM specification requires the retransmit timer to be cancelled
when the monitor timer is set.  The retransmit timer cannot be set
again while the monitor timer is pending.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:04 +03:00
Mat Martineau c9e3d5e004 Bluetooth: Use new header structures in l2cap_send_rr_or_rnr
struct l2cap_ctrl is now used, and the sframe is now sent directly
rather than depending on a separate call.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:04 +03:00
Mat Martineau fcd289df88 Bluetooth: Handle incoming REJ frames
REJ frames are sent by the remote device to request that all frames
after a given sequence number be retransmitted.  These are also an
implicit indication that the remote device is not in a busy state and
can receive new iframes.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:04 +03:00