Commit Graph

418 Commits

Author SHA1 Message Date
Gustavo Padovan 08e6d907fe Merge git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2012-05-16 16:11:44 -03:00
Mat Martineau d34c34fb25 Bluetooth: Initialize the transmit queue for L2CAP streaming mode
Commit 105bdf9ec1 introduced a
regression in L2CAP streaming mode due to rearranged initialization
code that is shared between ERTM and streaming mode.  This change
makes sure the transmit queue is initialized in both modes.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-15 20:28:16 -03:00
Mat Martineau 577cfaeb86 Bluetooth: Update tx_send_head when sending ERTM data
Commit 94122bbe9c introduced a problem
where tx_send_head was not set to point to the first skb in the ERTM
transmit queue, which stalled data transmission.  This change sets
that pointer when transmission is not already in progress.

Reported-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-14 16:32:11 -03:00
Gustavo Padovan a7d7723ae7 Bluetooth: notify userspace of security level change
It fixes L2CAP socket based security level elevation during a
connection. The HID profile needs this (for keyboards) and it is the only
way to achieve the security level elevation when using the management
interface to talk to the kernel (hence the management enabling patch
being the one that exposes this issue).

It enables the userspace a security level change when the socket is
already connected and create a way to notify the socket the result of the
request. At the moment of the request the socket is made non writable, if
the request fails the connections closes, otherwise the socket is made
writable again, POLL_OUT is emmited.

Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-14 13:51:25 -04:00
Mat Martineau 94122bbe9c Bluetooth: Refactor L2CAP ERTM and streaming transmit segmentation
Use more common code for ERTM and streaming mode segmentation and
transmission, and begin using skb control block data for delaying
extended or enhanced header generation until just before the packet is
transmitted.  This code is also better suited for resegmentation,
which is needed when L2CAP links are reconfigured after an AMP channel
move.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:53 -03:00
Andrei Emeltchenko daf6a78c16 Bluetooth: Remove unneeded calculation and magic number
Remove magic number unneeded calculation since
hlen = L2CAP_HDR_SIZE + L2CAP_PSMLEN_SIZE

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:53 -03:00
Gustavo Padovan f2ba7fae04 Bluetooth: Remove hlen variable
hlen has a fixed size of L2CAP_HDR_SIZE, use this instead.

Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-05-09 01:40:52 -03:00
Gustavo Padovan 6ff9b5ef5e Bluetooth: Remove unneeded elements from size calculation
hlen - L2CAP_HDR_SIZE = 0, so we don't need to add them in the
calculation.

Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-05-09 01:40:50 -03:00
Mat Martineau 422e925b5b Bluetooth: Add Code Aurora Forum copyright
Adding Code Aurora Forum copyright information due to significant
additions of code.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:49 -03:00
Mat Martineau 61d6ef3e34 Bluetooth: Make better use of l2cap_chan reference counting
L2CAP sockets contain a pointer to l2cap_chan that needs to be
reference counted in order to prevent a possible dangling pointer when
the channel is freed.

There were a few other cases where an l2cap_chan pointer on the stack
was dereferenced after a call to l2cap_chan_del. Those pointers are
also now reference counted.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:49 -03:00
Mat Martineau dbd89fddc1 Bluetooth: Remove unused function
l2cap_get_chan_by_ident was not used, but didn't generate a compiler
warning because it was an inline function.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:48 -03:00
Mat Martineau 105bdf9ec1 Bluetooth: Initialize new l2cap_chan structure members
Structure members used by ERTM or streaming mode need to be
initialized when an ERTM or streaming mode link is configured.  Some
duplicate code is also eliminated by moving in to the ERTM init
function.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:48 -03:00
Mat Martineau b5c6aaed18 Bluetooth: Move recently-added ERTM header packing functions
Moving these functions simplifies future patches by eliminating
forward declarations, makes future patches easier to review, and
better preserves 'git blame' information.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:47 -03:00
Mat Martineau 3ce3514f5d Bluetooth: Remove duplicate structure members from bt_skb_cb
These values are now in the nested l2cap_ctrl struct.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:47 -03:00
Andre Guedes 8e9f98921c Bluetooth: Use address type info from user-space
In order to establish a LE connection we need the address type
information. User-space already pass this information to kernel
through struct sockaddr_l2.

This patch adds the dst_type parameter to l2cap_chan_connect so we
are able to pass the address type info from user-space down to
hci_conn layer.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:45 -03:00
Andre Guedes b12f62cfd9 Bluetooth: Add dst_type parameter to hci_connect
This patch adds the dst_type parameter to hci_connect function.
Instead of searching the address type in advertising cache, we
use the dst_type parameter to establish LE connections.

The dst_type is ignored for BR/EDR connection establishment.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:45 -03:00
Vinicius Costa Gomes 9f0caeb1de Bluetooth: Add support for reusing the same hci_conn for LE links
As most LE devices leave advertising mode when they enter the connected
state, we may want to "pass" that connection to other users.

The first user will be the pairing procedure, the connection is
established without an associated socket, after the pairing is
complete, userspace may want to discover via GATT what services the
newly bonded device has.

If userspace establishes the connection while the timeout still
hasn't expired, the connection will be re-used.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Tested-by: João Paulo Rechi Vita <jprvita@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:41 -03:00
Ido Yariv c22876814e Bluetooth: Search global l2cap channels by src/dst addresses
The cid or psm and the source address might not be enough to uniquely
identify a global channel, especially when the source address is our
own.

For instance, when trying to communicate with two LE devices in master
mode, data received from the both devices is sent to the same socket.

Fix this by taking the destination address into account when choosing
the socket.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Tested-by: João Paulo Rechi Vita <jprvita@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:41 -03:00
Hemant Gupta 35d4adcca1 Bluetooth: Don't distribute keys in case of Encryption Failure
SMP Keys should only be distributeed when encryption is successful.

Signed-off-by: Hemant Gupta <hemant.gupta@stericsson.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:36 -03:00
Mat Martineau b76bbd6657 Bluetooth: Functions for handling ERTM control fields
These functions encode or decode ERTM control fields (extended or
enhanced) to or from the new l2cap_ctrl structure.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:31 -03:00
Mat Martineau 3c588192b5 Bluetooth: Add the l2cap_seq_list structure for tracking frames
A sequence list is a data structure used to track frames that need to
be retransmitted, and frames that have been requested for
retransmission by the remote device.  It can compactly represent a
list of sequence numbers within the ERTM transmit window.  Memory for
the list is allocated once at connection time, and common operations
in ERTM are O(1).

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:30 -03:00
Gustavo Padovan 9033894722 Bluetooth: Remove err parameter from alloc_skb()
Use ERR_PTR maginc instead.

Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-05-09 01:40:26 -03:00
Andrei Emeltchenko bd4b165312 Bluetooth: Adds set_default function in L2CAP setup
Some parameters in L2CAP chan are set to default similar way in
socket based channels and A2MP channels. Adds common function which
sets all defaults.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 00:41:39 -03:00
Gustavo Padovan eef1d9b668 Bluetooth: Remove sk parameter from l2cap_chan_create()
Following the separation if core and sock code this change avoid
manipulation of sk inside l2cap_chan_create().

Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 00:41:36 -03:00
Andrei Emeltchenko 14a2849184 Bluetooth: Make L2CAP chan_add functions static
Remove sparse warnings below:

...
net/bluetooth/l2cap_core.c:302:6: warning: symbol '__l2cap_chan_add' was
not declared. Should it be static?
net/bluetooth/l2cap_core.c:351:6: warning: symbol 'l2cap_chan_add' was
not declared. Should it be static?
...

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 00:41:36 -03:00
Andrei Emeltchenko bcd11ff7c2 Bluetooth: Remove unneeded timer clear
set_chan_timer clears timer itself

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 00:41:35 -03:00
Andrei Emeltchenko 4fd21a88e3 Bluetooth: trivial: Fix endian conversion mode
In L2CAP we use le16 format so change direction of conversion
from le16_to_cpu to cpu_to_le16.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-05-09 00:41:31 -03:00
Andrei Emeltchenko 8ce0c498aa Bluetooth: Convert error codes to le16
Create Chan Rsp shall put result and status in le format.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-05-09 00:41:31 -03:00
Andrei Emeltchenko d9b887020e Bluetooth: Correct CID endian notation
L2CAP channel id is used in host format in internal L2CAP code.
Fix sparse warnings about wrong endian conversion.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-05-09 00:41:31 -03:00
Andrei Emeltchenko 61386cba0f Bluetooth: Correct length calc in L2CAP conf rsp
cmd->len is in le format so convert it to host format before use.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-05-09 00:41:31 -03:00
Andrei Emeltchenko 097db76cdc Bluetooth: Correct chan->psm endian conversions
chan->psm is kept in __le16 format which was not always taken
into account. Fix several bugs related to extra conversion.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2012-05-09 00:41:29 -03:00
John W. Linville 41833af713 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2012-04-09 15:47:49 -04:00
David Howells 9ffc93f203 Remove all #inclusions of asm/system.h
Remove all #inclusions of asm/system.h preparatory to splitting and killing
it.  Performed with the following command:

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

Signed-off-by: David Howells <dhowells@redhat.com>
2012-03-28 18:30:03 +01:00
Andrei Emeltchenko 8d7e1c7f7e Bluetooth: Fix memory leaks due to chan refcnt
When we queue delayed work we hold(chan) and delayed work
shall put(chan) after execution.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-03-28 12:02:39 -03:00
Gustavo F. Padovan 04124681f1 Bluetooth: fix conding style issues all over the tree
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2012-03-08 02:02:26 -03:00
Marcel Holtmann ba13ccd9b9 Bluetooth: Update L2CAP timeout constants to use msecs_to_jiffies
The L2CAP timeout constants are always used in form of jiffies. So just
include the conversion from msecs in the define itself. This has the
advantage of making the code where the timeout is used more readable.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-03-02 00:33:14 +02:00
Andrei Emeltchenko 978c93b90f Bluetooth: Save remote L2CAP fixed channel mask
Fixed channel mask needs to be stored to decide whether to
use A2MP for example. So far save only one relevant byte which
keeps all information we need.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-29 16:20:19 +02:00
Dan Carpenter 3379013bcf Bluetooth: use kfree_skb() instead of kfree()
sk_buffs should be freed using kfree_skb().

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-29 16:18:03 +02:00
Andrei Emeltchenko 9b27f35068 Bluetooth: Remove duplicated code in l2cap conn req
The same sequence sending L2CAP Connection Request was used in several
places. Using subroutine makes those places easy to read.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-24 20:35:02 +02:00
Andrei Emeltchenko 5b4cedaa14 Bluetooth: Fix double locking in LE and conless chan
Remove socket lock since chan->ops->recv locks socket itself.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-24 20:32:50 +02:00
Andrei Emeltchenko 6be3655552 Bluetooth: Change sk lock to chan lock in L2CAP core
Change sk lock to chan lock in l2cap core and move sk locks
to l2cap sock code. bh_locks were used because of being RCU
critical section. When needed use explicit socket locks.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-23 13:07:02 +02:00
Andrei Emeltchenko 643162a8e2 Bluetooth: Add unlocked __l2cap_chan_add function
Add unlocked L2CAP channel add function. Unlocked version will
be used in later patches.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-23 13:07:02 +02:00
Andrei Emeltchenko 2e0052e4cf Bluetooth: Add socket error function
Use locked and unlocked versions to help removing socket
locks from l2cap core functions.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-23 13:06:58 +02:00
Andrei Emeltchenko 0e587be728 Bluetooth: Add locked and unlocked state_change
Split to locked and unlocked versions of l2cap_state_change helping
to remove socket locks from l2cap code.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-23 13:06:58 +02:00
Andrei Emeltchenko c03b355ea2 Bluetooth: Add l2cap_chan_lock
Channel lock will be used to lock L2CAP channels which are locked
currently by socket locks.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-23 13:06:58 +02:00
Andrei Emeltchenko 3df91ea20e Bluetooth: Revert to mutexes from RCU list
Usage of RCU list looks not reasonalbe for a number of reasons:
our code sleep and we had to use socket spinlocks. Most parts
of code are updaters thus there is little sense to use RCU.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-23 13:06:57 +02:00
Andrei Emeltchenko 1b009c9824 Bluetooth: trivial: Fix long line
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-23 13:06:57 +02:00
Andrei Emeltchenko 42d2d87cfe Bluetooth: Prefix hex numbers with object name
Several hex numbers were printed without object name which
complicates debugging.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-17 13:02:33 +02:00
Andrei Emeltchenko e05dcc3291 Bluetooth: Use symbolic names for state in debug
Use state_to_string function in debug statements.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-17 13:01:54 +02:00
Andrei Emeltchenko 20d1803a70 Bluetooth: Move scope of state_to_string
Function state_to_string will be used in other files in debug
statements.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-17 13:01:10 +02:00
Szymon Janc 930fa4aee9 Bluetooth: Fix double acking I-Frames when sending pending I-Frames
Pending I-Frame(s) are considered as acknowledgement. To void double
acking (via I-Frame and later via RR) clear ack timer when sending
first pending I-Frame.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:35 +02:00
Szymon Janc 8ed7a0ae78 Bluetooth: Fix possible missing I-Frame acknowledgement
Make l2cap_ertm_send return number of pending I-Frames transmitted
instead of all (pending + retransmitted) I-Frames transmitted.

As only pending I-Frames are considered as acknowledgement, this could
lead to situation when no ACK was sent in __l2cap_send_ack (if only
already transmitted I-Frames were retransmitted).

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:35 +02:00
Andrei Emeltchenko 6d5922b01b Bluetooth: Remove unneeded sk variable
In debug use chan %p instead of sk.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:35 +02:00
Andrei Emeltchenko 5491120e75 Bluetooth: Clean up l2cap_chan_add
Change elseif to switch. This make sense even more with following
patches which otherwise have to add more elseifs statements.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:35 +02:00
Andrei Emeltchenko cf4cd00915 Bluetooth: Change chan_ready param from sk to chan
Change is needed to remove dependency on sk when possible
before introducing l2cap channel lock.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:35 +02:00
Ulisses Furquim 127074bfa3 Bluetooth: Fix possible use after free in delete path
We need to use the _sync() version for cancelling the info and security
timer in the L2CAP connection delete path. Otherwise the delayed work
handler might run after the connection object is freed.

Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:30 +02:00
Ulisses Furquim 17cd3f374b Bluetooth: Remove usage of __cancel_delayed_work()
__cancel_delayed_work() is being used in some paths where we cannot
sleep waiting for the delayed work to finish. However, that function
might return while the timer is running and the work will be queued
again. Replace the calls with safer cancel_delayed_work() version
which spins until the timer handler finishes on other CPUs and
cancels the delayed work.

Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:30 +02:00
Szymon Janc cad8f1d072 Bluetooth: Make l2cap_ertm_data_rcv static
It is not used outside of l2cap_core.c. Also l2cap_ertm_data_rcv is
only used after it is defined so there is no need for forward declaration.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:29 +02:00
Andrei Emeltchenko 2f7719ce54 Bluetooth: Add alloc_skb chan operator
Add channel-specific skb allocation method

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:29 +02:00
Andrei Emeltchenko 61e1b4b7de Bluetooth: trivial: space correction
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:29 +02:00
Johan Hedberg 51a8efd7d0 Bluetooth: Rename conn->pend to conn->flags
These flags can and will be used for more general purpose values than
just pending state transitions so the more common name "flags" makes
more sense than "pend".

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:28 +02:00
Andrei Emeltchenko 0952a57a25 Bluetooth: Change sk to l2cap_chan
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:27 +02:00
Andrei Emeltchenko 5ef8cb9e5b Bluetooth: Use chan instead of sk
Remove unneeded conversion from sk to chan.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:26 +02:00
Szymon Janc 09bfb2ee52 Bluetooth: Drop L2CAP chan reference if ERTM ack_timer fired
Reference counter was incremented when starting ack timer but
decremented only when clearing timer, not when timer fired.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:26 +02:00
Szymon Janc 77f918bc7b Bluetooth: Don't send RNR immediately when entering local busy
There is no need to send RNR immediately when entring local busy.
Also upper layer might clear local busy condition before ack timer
expires saving few cycles for sending RNR.

This also prevents sending two RNRs in some cases where sending one
would be enough i.e received N I-frame can trigger local busy
(sending RNR acking up to N-1 I-frame) and later sending ack (RNR
acking up to N I-frame).

This was affecting TC_ERM_BV_07_C and TC_ERM_BV_22_C with some non
default channel parameters (tx window and receiving buffer sizes).

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:26 +02:00
Szymon Janc b17e73bb42 Bluetooth: Clear ack_timer when sending ack
ack_timer should be cleared when sending ACK to avoid acking I-frames
twice.

This commit introduces helper function (only send ack, not clearing
timer) which is used by l2cap_send_ack and l2cap_ack_timeout. This is
to avoid clearing ack timer in timer function.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:26 +02:00
Szymon Janc 0ef3ef0f67 Bluetooth: Set P-bit for SREJ frame only if there are I-frames to ack
SREJ frame with P-bit set acknowledges I-frames numbered up to
(ReqSeq - 1). With this patch P-bit in SREJ is set only when there are
some I-frames to ack.

This fixes ambiguous situation when lost of I-frame with TxSeq=0 would
result in sending SREJ acking all previous I-frames.
Consider following scenario:
TxWindow=3

HostA: sent I-frame TxSeq=0
HostA: sent I-frame TxSeq=1
HostA: sent I-frame TxSeq=2
HostB: missed I-frame TxSeq=0
HostB: received I-frame TxSeq=1
HostB: sent SREJ ReqSeq=0 Pbit=1
HostA: received SREJ ReqSeq=0 Pbit=1   <- All I-frames acked or not?
...

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:25 +02:00
Johan Hedberg cbe8fed490 Bluetooth: Remove bogus inline declaration from l2cap_chan_connect
As reported by Dan Carpenter this function causes a Sparse warning and
shouldn't be declared inline:

include/net/bluetooth/l2cap.h:837:30 error: marked inline, but without a
definition"

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:25 +02:00
Andrzej Kaczmarek b83ddfe2ac Bluetooth: l2cap_set_timer needs jiffies as timeout value
After moving L2CAP timers to workqueues l2cap_set_timer expects timeout
value to be specified in jiffies but constants defined in miliseconds
are used. This makes timeouts unreliable when CONFIG_HZ is not set to
1000.

__set_chan_timer macro still uses jiffies as input to avoid multiple
conversions from/to jiffies for sk_sndtimeo value which is already
specified in jiffies.

Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com>
Ackec-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:21 +02:00
John W. Linville 874c60bad9 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-next 2012-01-10 15:44:17 -05:00
John W. Linville 57adc1fcba Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
Conflicts:
	drivers/net/wireless/b43/dma.c
	drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
2012-01-03 15:16:34 -05:00
Gustavo F. Padovan 333055f2aa Bluetooth: Don't use *_bh locks anymore
Those locks are not shared between interrupt and process context anymore,
so remove the part that disable interrupts.  We are still safe because
preemption is disabled.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2012-01-03 01:38:36 -02:00
Gustavo F. Padovan 9219b2a08c Bluetooth: Fix bacpy in l2cap_core.c
It should be the dst in the copy not src. 03a001948 introduced this bug.

Reported-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2012-01-02 20:08:04 -02:00
David S. Miller abb434cb05 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	net/bluetooth/l2cap_core.c

Just two overlapping changes, one added an initialization of
a local variable, and another change added a new local variable.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-23 17:13:56 -05:00
Gustavo F. Padovan 2fb9b3d4e5 Bluetooth: add debug output to l2cap_ack_timeout()
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-22 18:00:54 -02:00
Ulisses Furquim 371fd83563 Bluetooth: Fix deadlocks with sock lock and L2CAP timers locks
When cancelling a delayed work (timer) in L2CAP we can not sleep holding
the sock mutex otherwise we might deadlock with an L2CAP timer handler.
This is possible because RX/TX and L2CAP timers run in different workqueues.
The scenario below illustrates the problem. Thus we are now avoiding to
sleep on the timers locks.

 ======================================================
 [ INFO: possible circular locking dependency detected ]
 3.1.0-05270-ga978dc7-dirty #239
 -------------------------------------------------------
 kworker/1:1/873 is trying to acquire lock:
  (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+...}, at: [<ffffffffa002ceac>] l2cap_chan_timeout+0x3c/0xe0 [bluetooth]

 but task is already holding lock:
  ((&(&chan->chan_timer)->work)){+.+...}, at: [<ffffffff81051a86>] process_one_work+0x126/0x450

 which lock already depends on the new lock.

 the existing dependency chain (in reverse order) is:

 -> #1 ((&(&chan->chan_timer)->work)){+.+...}:
        [<ffffffff8106b276>] check_prevs_add+0xf6/0x170
        [<ffffffff8106b903>] validate_chain+0x613/0x790
        [<ffffffff8106dfee>] __lock_acquire+0x4be/0xac0
        [<ffffffff8106ec2d>] lock_acquire+0x8d/0xb0
        [<ffffffff81052a6f>] wait_on_work+0x4f/0x160
        [<ffffffff81052ca3>] __cancel_work_timer+0x73/0x80
        [<ffffffff81052cbd>] cancel_delayed_work_sync+0xd/0x10
        [<ffffffffa002f2ed>] l2cap_chan_connect+0x22d/0x470 [bluetooth]
        [<ffffffffa002fb51>] l2cap_sock_connect+0xb1/0x140 [bluetooth]
        [<ffffffff8130811b>] kernel_connect+0xb/0x10
        [<ffffffffa00cf98a>] rfcomm_session_create+0x12a/0x1c0 [rfcomm]
        [<ffffffffa00cfbe7>] __rfcomm_dlc_open+0x1c7/0x240 [rfcomm]
        [<ffffffffa00d07c2>] rfcomm_dlc_open+0x42/0x70 [rfcomm]
        [<ffffffffa00d3b03>] rfcomm_sock_connect+0x103/0x150 [rfcomm]
        [<ffffffff8130bd7e>] sys_connect+0xae/0xc0
        [<ffffffff813368d2>] compat_sys_socketcall+0xb2/0x220
        [<ffffffff813b2089>] sysenter_dispatch+0x7/0x30

 -> #0 (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+...}:
        [<ffffffff8106b16d>] check_prev_add+0x6cd/0x6e0
        [<ffffffff8106b276>] check_prevs_add+0xf6/0x170
        [<ffffffff8106b903>] validate_chain+0x613/0x790
        [<ffffffff8106dfee>] __lock_acquire+0x4be/0xac0
        [<ffffffff8106ec2d>] lock_acquire+0x8d/0xb0
        [<ffffffff8130d91a>] lock_sock_nested+0x8a/0xa0
        [<ffffffffa002ceac>] l2cap_chan_timeout+0x3c/0xe0 [bluetooth]
        [<ffffffff81051ae4>] process_one_work+0x184/0x450
        [<ffffffff8105276e>] worker_thread+0x15e/0x340
        [<ffffffff81057bb6>] kthread+0x96/0xa0
        [<ffffffff813b1ef4>] kernel_thread_helper+0x4/0x10

 other info that might help us debug this:

  Possible unsafe locking scenario:

        CPU0                    CPU1
        ----                    ----
   lock((&(&chan->chan_timer)->work));
                                lock(sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP);
                                lock((&(&chan->chan_timer)->work));
   lock(sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP);

  *** DEADLOCK ***

 2 locks held by kworker/1:1/873:
  #0:  (events){.+.+.+}, at: [<ffffffff81051a86>] process_one_work+0x126/0x450
  #1:  ((&(&chan->chan_timer)->work)){+.+...}, at: [<ffffffff81051a86>] process_one_work+0x126/0x450

 stack backtrace:
 Pid: 873, comm: kworker/1:1 Not tainted 3.1.0-05270-ga978dc7-dirty #239
 Call Trace:
  [<ffffffff813a0f6e>] print_circular_bug+0xd2/0xe3
  [<ffffffff8106b16d>] check_prev_add+0x6cd/0x6e0
  [<ffffffff8106b276>] check_prevs_add+0xf6/0x170
  [<ffffffff8106b903>] validate_chain+0x613/0x790
  [<ffffffff8106dfee>] __lock_acquire+0x4be/0xac0
  [<ffffffff8130d8f6>] ? lock_sock_nested+0x66/0xa0
  [<ffffffff8106ea30>] ? lock_release_nested+0x100/0x110
  [<ffffffff8130d8f6>] ? lock_sock_nested+0x66/0xa0
  [<ffffffff8106ec2d>] lock_acquire+0x8d/0xb0
  [<ffffffffa002ceac>] ? l2cap_chan_timeout+0x3c/0xe0 [bluetooth]
  [<ffffffff8130d91a>] lock_sock_nested+0x8a/0xa0
  [<ffffffffa002ceac>] ? l2cap_chan_timeout+0x3c/0xe0 [bluetooth]
  [<ffffffff81051a86>] ? process_one_work+0x126/0x450
  [<ffffffffa002ceac>] l2cap_chan_timeout+0x3c/0xe0 [bluetooth]
  [<ffffffff81051ae4>] process_one_work+0x184/0x450
  [<ffffffff81051a86>] ? process_one_work+0x126/0x450
  [<ffffffffa002ce70>] ? l2cap_security_cfm+0x4e0/0x4e0 [bluetooth]
  [<ffffffff8105276e>] worker_thread+0x15e/0x340
  [<ffffffff81052610>] ? manage_workers+0x110/0x110
  [<ffffffff81057bb6>] kthread+0x96/0xa0
  [<ffffffff813b1ef4>] kernel_thread_helper+0x4/0x10
  [<ffffffff813af69d>] ? retint_restore_args+0xe/0xe
  [<ffffffff81057b20>] ? __init_kthread_worker+0x70/0x70
  [<ffffffff813b1ef0>] ? gs_change+0xb/0xb

Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-22 14:15:09 -02:00
Ulisses Furquim 686ebf283b Bluetooth: Make HCI call directly into SCO and L2CAP event functions
The struct hci_proto and all related register/unregister and dispatching
code was removed. HCI core code now call directly the SCO and L2CAP
event functions.

Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-22 14:07:29 -02:00
Gustavo F. Padovan 030013d858 Bluetooth: Rename info_work to info_timer
It makes more sense this way, since info_timer is a timer using delayed
work API.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-20 17:07:16 -02:00
Gustavo F. Padovan 6c9d42a161 Bluetooth: convert security timer to delayed_work
This one also needs to run in process context

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-20 17:07:03 -02:00
Gustavo F. Padovan c2ec9c1bbd Bluetooth: Move l2cap_{set,clear}_timer to l2cap.h
It is the only place where it is used.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-20 17:06:30 -02:00
Rusty Russell eb93992207 module_param: make bool parameters really bool (net & drivers/net)
module_param(bool) used to counter-intuitively take an int.  In
fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
trick.

It's time to remove the int/unsigned int option.  For this version
it'll simply give a warning, but it'll break next kernel version.

(Thanks to Joe Perches for suggesting coccinelle for 0/1 -> true/false).

Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-19 22:27:29 -05:00
Gustavo F. Padovan 4b0b2f088f Merge git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth
Conflicts:
	net/bluetooth/l2cap_core.c
2011-12-19 11:37:53 -02:00
Mat Martineau 36e999a83a Bluetooth: Prevent uninitialized data access in L2CAP configuration
When configuring an ERTM or streaming mode connection, remote devices
are expected to send an RFC option in a successful config response.  A
misbehaving remote device might not send an RFC option, and the L2CAP
code should not access uninitialized data in this case.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 22:16:04 -02:00
Gustavo F. Padovan 590051de5c Bluetooth: Add ProFUSION's copyright
Add ProFUSION's copyright to some files I've been touching recently.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:59 -02:00
Gustavo F. Padovan 3d57dc6806 Bluetooth: Change l2cap chan_list to use RCU
This list has much more reads than writes, so RCU makes senses here, also
it avoid deadlock against the socket lock.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:57 -02:00
Gustavo F. Padovan 03a0019481 Bluetooth: invert locking order in connect path
This move some checking code that was in l2cap_sock_connect() to
l2cap_chan_connect(). Thus we can invert the lock calls, i.e., call
lock_sock() before hci_dev_lock() to avoid a deadlock scenario.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:57 -02:00
Gustavo F. Padovan f878fcad17 Bluetooth: convert info timer to delayed_work
Another step of remove interrupt context from Bluetooth Core.
Use the system workqueue.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:57 -02:00
Gustavo F. Padovan d01b2ff4e6 Bluetooth: convert chan_lock to mutex
spin lock doesn't fit ok anymore on the new code based on workqueues.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:56 -02:00
Gustavo F. Padovan eb403a1b7e Bluetooth: Remove sk_backlog usage from L2CAP
We run everything in the same lock now. The backlog queue is useless now

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:55 -02:00
Gustavo F. Padovan aa2ac881ba Bluetooth: Don't use spin_lock socket lock anymore
We now run everything in process context, so the mutex lock is the best
option. But in some places we still need the bh_lock_sock()

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:55 -02:00
Gustavo F. Padovan 721c41812d Bluetooth: Move L2CAP timers to workqueue
L2CAP timers also need to run in process context. As the works in l2cap
are small we are using the system worqueue.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:55 -02:00
Gustavo F. Padovan 09fd0de5bd Bluetooth: Replace spin_lock by mutex in hci_dev
Now we run everything in HCI in process context, so it's a better idea use
mutex instead spin_lock. The macro remains hci_dev_lock() (and I got rid
of hci_dev_lock_bh()), of course.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:54 -02:00
Gustavo F. Padovan badaaa00f2 Bluetooth: Add user readable debug for state changes
I did this as a part of a testing course at university, but it might be
useful upstream as well.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-23 20:11:46 -02:00
Andrei Emeltchenko 7784d78f18 Bluetooth: making enable_hs independent from L2CAP
Fixes bluetooth compiling when CONFIG_BT_L2CAP is not enabled

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

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-21 14:44:49 -02:00
Szymon Janc 1ec918cef5 Bluetooth: Fix some checkpatch.pl errors and warnings
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-16 18:30:21 -02:00
Szymon Janc 250938cb37 Bluetooth: Simplify __l2cap_global_chan_by_addr
Make __l2cap_global_chan_by_addr similar to other find functions.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-16 18:29:44 -02:00
Szymon Janc d1726b6dc9 Bluetooth: Refactor loop in l2cap_retransmit_one_frame
This make it easier to see what is the real reason for loop to exit.
skb_queue_next return valid skb or garbage, not NULL.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-16 18:29:28 -02:00
Szymon Janc 039d9572f1 Bluetooth: Simplify l2cap_add_to_srej_queue
Make it easier to see what is loop break condition.
skb_queue_next return valid skb or garbage, not NULL.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-16 18:29:07 -02:00
Szymon Janc aef89f214e Bluetooth: Fix possible NULL pointer derefence in l2cap code
Due to ERTM reliability L2CAP channel needs to be disconnected if
adding to srej list failed.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-16 18:28:37 -02:00
Gustavo F. Padovan 4d611e4d3d Bluetooth: Only set ack_timer if we didn't send and ack
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-10 20:43:31 -02:00
Gustavo F. Padovan d45fc42323 Bluetooth: Rename l2cap_check_security()
rename to l2cap_chan_check_security() to make it consistent with other
l2cap_exported functions. This function will be exported in a later
commit.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-10 20:25:03 -02:00
John W. Linville 312fef7d18 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-next
Conflicts:
	net/bluetooth/l2cap_sock.c
	net/bluetooth/mgmt.c
2011-11-09 14:54:33 -05:00
Andrei Emeltchenko 66af7aaf9e Bluetooth: EFS: parse L2CAP config response
Add parsing Extended Flow Specification in L2CAP Config Response.
Based upon haijun.liu <haijun.liu@atheros.com> series of patches
(sent Sun, 22 Aug 2010)

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-08 12:53:57 -02:00
Andrei Emeltchenko 9f5a0d7bf0 Bluetooth: Define HCI reasons instead of magic number
Use HCI error reasons instead of magic numbers.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-08 12:53:11 -02:00
Szymon Janc abc545b8ef Bluetooth: Add debug print to l2cap_chan_create
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:25:05 -02:00
Mat Martineau 8d5a04a130 Bluetooth: Add signal handlers for channel moves
AMP channels can be moved between BR/EDR and AMP controllers using a
sequence of signals. Every attempted channel move involves a series of
four signals:

   Move Initiator                 Move Responder
        |                                 |
        |       Move Channel Request      |
        |  ---------------------------->  |
        |                                 |
        |       Move Channel Response     |
        |  <----------------------------  |
        |                                 |
        |       Move Channel Confirm      |
        |  ---------------------------->  |
        |                                 |
        |  Move Channel Confirm Response  |
	|  <----------------------------  |

All four signals are sent even if the move fails.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:25:03 -02:00
Mat Martineau 50a147cd9c Bluetooth: Use symbolic values for the fixed channel map
The A2MP fixed channel bit is only set when high-speed mode is enabled.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:25:03 -02:00
Mat Martineau f94ff6fff7 Bluetooth: Add signal handlers for channel creation
Handle both "create channel request" and "create channel response".

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:25:01 -02:00
Luiz Augusto von Dentz 73d80deb7b Bluetooth: prioritizing data over HCI
This implement priority based scheduler using skbuffer priority set via
SO_PRIORITY socket option.

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

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:56 -02:00
Luiz Augusto von Dentz 5e59b791c3 Bluetooth: set skbuffer priority based on L2CAP socket priority
This uses SO_PRIORITY to set the skbuffer priority field

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:47 -02:00
Andrei Emeltchenko 457f48507d Bluetooth: correct debug output
l2cap_set_timer function prints sk instead of chan pointer.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:45 -02:00
Andrei Emeltchenko c6337ea6e5 Bluetooth: remove magic offset and size
make code readable by removing magic numbers

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:44 -02:00
Gustavo F. Padovan 3e6b3b95f2 Bluetooth: small styles clean ups to l2cap_core.c
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:44 -02:00
Andrei Emeltchenko 0e8b207e8a Bluetooth: EFS: implement L2CAP config pending state
Add L2CAP Config Pending state for EFS. Currently after receiving
Config Response Pending respond with Config Response Success.

...
> ACL data: handle 1 flags 0x02 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 0 status 0
      Connection successful
> ACL data: handle 1 flags 0x02 dlen 45
    L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 33
      RFC 0x03 (Enhanced Retransmission, TxWin 63, MaxTx 3, RTo 0, MTo 0, MPS 1009)
      EFS (Id 0x01, SerType Best Effort, MaxSDU 0xffff, SDUitime 0xffffffff,
          AccLat 0xffffffff, FlushTO 0x0000ffff)
< ACL data: handle 1 flags 0x00 dlen 45
    L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 33
      RFC 0x03 (Enhanced Retransmission, TxWin 63, MaxTx 3, RTo 0, MTo 0, MPS 498)
      EFS (Id 0x01, SerType Best Effort, MaxSDU 0xffff, SDUitime 0xffffffff,
          AccLat 0xffffffff, FlushTO 0x0000ffff)
< ACL data: handle 1 flags 0x00 dlen 47
    L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 4 clen 33
      Pending
      MTU 672
      RFC 0x03 (Enhanced Retransmission, TxWin 63, MaxTx 3, RTo 2000, MTo 12000, MPS 498)
      EFS (Id 0x01, SerType Best Effort, MaxSDU 0xffff, SDUitime 0xffffffff,
          AccLat 0xffffffff, FlushTO 0x0000ffff)
> ACL data: handle 1 flags 0x02 dlen 47
    L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 4 clen 33
      Pending
      MTU 672
      RFC 0x03 (Enhanced Retransmission, TxWin 63, MaxTx 3, RTo 2000, MTo 12000, MPS 498)
      EFS (Id 0x01, SerType Best Effort, MaxSDU 0xffff, SDUitime 0xffffffff,
          AccLat 0xffffffff, FlushTO 0x0000ffff)
> ACL data: handle 1 flags 0x02 dlen 14
    L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
      Success
< ACL data: handle 1 flags 0x00 dlen 14
    L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
      Success
< ACL data: handle 1 flags 0x00 dlen 510
    L2CAP(d): cid 0x0040 len 506 ext_ctrl 0x00010000 fcs 0xebe0 [psm 4113]
      I-frame: Start (len 672) TxSeq 0 ReqSeq 0
...

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:43 -02:00
Andrzej Kaczmarek f3f668b0ef Bluetooth: Use miliseconds for L2CAP channel timeouts
Timers set by __set_chan_timer() should use miliseconds instead of
jiffies. Commit 942ecc9c46 updated
l2cap_set_timer() so it expects timeout to be specified in msecs
instead of jiffies. This makes timeouts unreliable when CONFIG_HZ
is not set to 1000.

Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:19:04 -02:00
Andrei Emeltchenko 42dceae281 Bluetooth: EFS: parse L2CAP config request
Add parsing Extended Flow Specification option in L2CAP Config Request
Based upon haijun.liu <haijun.liu@atheros.com> series of patches
(sent Sun, 22 Aug 2010)

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-17 18:09:06 -02:00
Andrei Emeltchenko c8f791626a Bluetooth: EWS: fix max_pdu calculation
Fix max_pdu_size calculationin for RFC. Change magic number to human readable
defines.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-17 18:04:58 -02:00
Andrei Emeltchenko 03a512137d Bluetooth: EWS: remove magic numbers in l2cap
Remove magic numbers for FCS, SDU LEN and PSM LEN
when calculating packet payload.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-17 18:04:14 -02:00
Andrei Emeltchenko 836be93421 Bluetooth: EWS: support extended seq numbers
Adds support for extended sequence numbers found in
extended control fields.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-17 18:04:00 -02:00
Andrei Emeltchenko 88843ab06b Bluetooth: EWS: handling different Control fields
There are three different Control Field formats: the Standard Control
Field, the Enhanced Control Field, and the Extended Control Field.
Patch adds function to handle all those fields seamlessly.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-17 17:58:08 -02:00
Andrei Emeltchenko f89cef09ce Bluetooth: EFS: add efs option in L2CAP conf req
Add Extended Flow Specification option when building L2CAP
Configuration Request. EFS is added if both the local and
remote L2CAP entities have indicated support for the
Extended Flow Specification for BR/EDR.

...
< ACL data: handle 1 flags 0x00 dlen 10
    L2CAP(s): Info req: type 2
> ACL data: handle 1 flags 0x02 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x01f8
        Enhanced Retransmission mode
        Streaming mode
        FCS Option
        Extended Flow Specification
        Fixed Channels
        Extended Window Size
...
< ACL data: handle 1 flags 0x00 dlen 45
    L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 33
      RFC 0x03 (Enhanced Retransmission, TxWin 63, MaxTx 3, RTo 0, MTo 0, MPS 498)
      EFS (Id 0x01, SerType Best Effort, MaxSDU 0xffff, SDUitime 0xffffffff,
          AccLat 0xffffffff, FlushTO 0x0000ffff)
...

Based upon haijun.liu <haijun.liu@atheros.com> series of patches
(sent Sun, 22 Aug 2010)

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-13 17:09:44 -03:00
Andrei Emeltchenko 8f7975b153 Bluetooth: EFS: assign default values in chan add
Assign default EFS values when creating L2CAP channel

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-13 17:09:08 -03:00
Andrei Emeltchenko e4ca6d9854 Bluetooth: EWS: recalculate L2CAP header size
Recalculate length of L2CAP header based on Control field length.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-13 16:50:14 -03:00
Andrei Emeltchenko e37817353b Bluetooth: EWS: rewrite handling POLL (P) bit
Handle POLL (P) bit in L2CAP ERTM using information about control field type.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-13 16:45:39 -03:00
Andrei Emeltchenko 03f6715d46 Bluetooth: EWS: rewrite handling FINAL (F) bit
Handle final (F) bit in L2CAP using information about control field type.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-13 16:45:34 -03:00
Andrei Emeltchenko 793c2f1cb9 Bluetooth: EWS: rewrite check frame type function
Check frame function uses now information about control field type.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-13 16:45:10 -03:00
Andrei Emeltchenko fb45de7dba Bluetooth: EWS: rewrite L2CAP ERTM txseq calculation
L2CAP ERTM txseq calculation uses now information about control field type.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-13 16:45:04 -03:00
Andrei Emeltchenko 0b209fae88 Bluetooth: EWS: rewrite reqseq calculation
reqseq calculation uses now information about control field type.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-13 16:44:59 -03:00
Andrei Emeltchenko 7e0ef6ee13 Bluetooth: EWS: rewrite handling SAR bits
Segmentation and Reassembly (SAR) occupies different windows in standard and
extended control fields. Convert hardcoded masks to relative ones and use shift
to access SAR bits.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-13 16:44:53 -03:00
Andrei Emeltchenko ab784b7383 Bluetooth: EWS: rewrite handling Supervisory (S) bits
Supervisory bits occupy different windows in standard / extended control
fields. Convert hardcoded masks to relative ones and use shift to access
S-bit window.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-13 16:44:47 -03:00
Andrei Emeltchenko 6327eb980d Bluetooth: EWS: extended window size option support
Adds support for extended window size (EWS) config option. We enable EWS
feature in L2CAP Info RSP when hs enabled. EWS option is included in L2CAP
Config Req if tx_win (which is set via socket) bigger then standard default
value (63) && hs enabled && remote side supports EWS feature.

Using EWS selects extended control field in L2CAP.

Code partly based on Qualcomm and Atheros patches sent upstream a year ago.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-13 16:44:26 -03:00
Andrei Emeltchenko 43bd0f32d5 Bluetooth: convert role_switch variable to flag in l2cap chan
role_switch variable inside l2cap_chan is a logical one and can
be easily converted to flag

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-11 10:48:28 -03:00
Andrei Emeltchenko 15770b1ab9 Bluetooth: convert force_active variable to flag in l2cap chan
force_active variable inside l2cap_chan is a logical one and can
be easily converted to flag

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-11 10:48:25 -03:00
Andrei Emeltchenko ecf61bdba8 Bluetooth: convert force_reliable variable to flag in l2cap chan
force_reliable variable inside l2cap_chan is a logical one and can
be easily converted to flag

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-11 10:48:21 -03:00
Andrei Emeltchenko d57b0e8b89 Bluetooth: convert flushable variable to flag in l2cap chan
flushable variable inside l2cap_chan is a logical one and can
be easily converted to flag. Added flags in l2cap_chan structure.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-11 10:44:44 -03:00
Andrei Emeltchenko a5fd6f3004 Bluetooth: EFS: add enable_hs kernel param
Add enable_hs kernel parameter. L2CAP_FEAT_EXT_FLOW depends on it.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-06 14:40:16 -03:00
Szymon Janc 67c9e840a0 Bluetooth: Mark not declared l2cap_core functions as static
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-09-27 18:20:19 -03:00
Mat Martineau 84084a3197 Bluetooth: Perform L2CAP SDU reassembly without copying data
Use sk_buff fragment capabilities to link together incoming skbs
instead of allocating a new skb for reassembly and copying.

The new reassembly code works equally well for ERTM and streaming
mode, so there is now one reassembly function instead of two.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-09-27 18:16:18 -03:00
Luiz Augusto von Dentz ab0ff76d1b Bluetooth: mark l2cap_create_iframe_pdu as static
l2cap_create_iframe_pdu is only used in l2cap_core.c

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-09-21 12:59:16 -03:00
Vinicius Costa Gomes 8aab47574a Bluetooth: Move SMP crypto functions to a workqueue
The function crypto_blkcipher_setkey() called by smp_e()
can sleep, so all the crypto work has to be moved to
hci_dev workqueue.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-09-21 12:58:12 -03:00
Vinicius Costa Gomes 160dc6ac12 Bluetooth: Add support for running SMP without a socket
When doing the pairing procedure we won't have an associated
socket, but we still have to do the SMP negotiation. This
adds support for encrypting the link and exchanging keys.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-09-21 12:58:11 -03:00
Vinicius Costa Gomes d26a234548 Bluetooth: Add a flag to indicate that SMP is going on
Add HCI_CONN_LE_SMP_PEND flag to indicate that SMP is pending
for that connection. This allows to have information that an SMP
procedure is going on for that connection.

We use the HCI_CONN_ENCRYPT_PEND to indicate that encryption
(HCI_LE_Start_Encryption) is pending for that connection.

While a SMP procedure is going on we hold an reference to the
connection, to avoid disconnections.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-09-21 12:58:11 -03:00
Peter Hurley a71a0cf4e9 Bluetooth: l2cap: Fix lost wakeup waiting for ERTM acks
Fix race condition which can result in missing wakeup during
l2cap socket shutdown.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-08-11 19:50:27 -03:00
David S. Miller 033b1142f4 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	net/bluetooth/l2cap_core.c
2011-07-21 13:38:42 -07:00
Ilia Kolomisnky 05e9a2f678 Bluetooth: Fix crash with incoming L2CAP connections
Another regression fix considering incomming l2cap connections with
defer_setup enabled. In situations when incomming connection is
extracted with l2cap_sock_accept, it's bt_sock info will have
'parent' member zerroed, but 'parent' may be used unconditionally
in l2cap_conn_start() and l2cap_security_cfm() when defer_setup
is enabled.

Backtrace:
[<bf02d5ac>] (l2cap_security_cfm+0x0/0x2ac [bluetooth]) from [<bf01f01c>] (hci_event_pac
ket+0xc2c/0x4aa4 [bluetooth])
[<bf01e3f0>] (hci_event_packet+0x0/0x4aa4 [bluetooth]) from [<bf01a844>] (hci_rx_task+0x
cc/0x27c [bluetooth])
[<bf01a778>] (hci_rx_task+0x0/0x27c [bluetooth]) from [<c008eee4>] (tasklet_action+0xa0/
0x15c)
[<c008ee44>] (tasklet_action+0x0/0x15c) from [<c008f38c>] (__do_softirq+0x98/0x130)
 r7:00000101 r6:00000018 r5:00000001 r4:efc46000
[<c008f2f4>] (__do_softirq+0x0/0x130) from [<c008f524>] (do_softirq+0x4c/0x58)
[<c008f4d8>] (do_softirq+0x0/0x58) from [<c008f5e0>] (run_ksoftirqd+0xb0/0x1b4)
 r4:efc46000 r3:00000001
[<c008f530>] (run_ksoftirqd+0x0/0x1b4) from [<c009f2a8>] (kthread+0x84/0x8c)
 r7:00000000 r6:c008f530 r5:efc47fc4 r4:efc41f08
[<c009f224>] (kthread+0x0/0x8c) from [<c008cc84>] (do_exit+0x0/0x5f0)

Signed-off-by: Ilia Kolomisnky <iliak@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-16 10:14:44 -07:00
Gustavo F. Padovan 9191e6ad89 Bluetooth: Fix regression in L2CAP connection procedure
Caused by the following commit, partially revert it.

commit 9fa7e4f76f
Author: Gustavo F. Padovan <padovan@profusion.mobi>
Date:   Thu Jun 30 16:11:30 2011 -0300

    Bluetooth: Fix regression with incoming L2CAP connections

    PTS test A2DP/SRC/SRC_SET/TC_SRC_SET_BV_02_I revealed that
    ( probably after the df3c3931e commit ) the l2cap connection
    could not be established in case when the "Auth Complete" HCI
    event does not arive before the initiator send "Configuration
    request", in which case l2cap replies with "Command rejected"
    since the channel is still in BT_CONNECT2 state.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-16 10:14:44 -07:00
John W. Linville 4b42c542af Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/padovan/bluetooth-next-2.6
Conflicts:
	net/bluetooth/l2cap_core.c
2011-07-11 14:58:22 -04:00
John W. Linville d859898114 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
Conflicts:
	drivers/net/wireless/ath/ath5k/sysfs.c
	net/bluetooth/l2cap_core.c
	net/mac80211/wpa.c
2011-07-11 14:46:59 -04:00
Ilia Kolomisnky e2fd318e3a Bluetooth: Fixes l2cap "command reject" reply according to spec
There can 3 reasons for the "command reject" reply produced
by the stack. Each such reply should be accompanied by the
relevand data ( as defined in spec. ). Currently there is one
instance of "command reject" reply with reason "invalid cid"
wich is fixed. Also, added clean-up definitions related to the
"command reject" replies.

Signed-off-by: Ilia Kolomisnky <iliak@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-11 01:43:25 -03:00
Vinicius Costa Gomes 7034b911af Bluetooth: Add support for SMP phase 3 (key distribution)
This adds support for generating and distributing all the keys
specified in the third phase of SMP.

This will make possible to re-establish secure connections, resolve
private addresses and sign commands.

For now, the values generated are random.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-08 17:07:43 -03:00
Mat Martineau fadd192e81 Bluetooth: Remove L2CAP busy queue
The ERTM receive buffer is now handled in a way that does not require
the busy queue and the associated polling code.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-07 15:29:06 -03:00
Mat Martineau e328140fda Bluetooth: Use event-driven approach for handling ERTM receive buffer
This change moves most L2CAP ERTM receive buffer handling out of the
L2CAP core and in to the socket code.  It's up to the higher layer
(the socket code, in this case) to tell the core when its buffer is
full or has space available.  The recv op should always accept
incoming ERTM data or else the connection will go down.

Within the socket layer, an skb that does not fit in the socket
receive buffer will be temporarily stored.  When the socket is read
from, that skb will be placed in the receive buffer if possible.  Once
adequate buffer space becomes available, the L2CAP core is informed
and the ERTM local busy state is cleared.

Receive buffer management for non-ERTM modes is unchanged.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-07 15:28:56 -03:00
Mat Martineau 26f880d221 Bluetooth: Move code for ERTM local busy state to separate functions
The local busy state is entered and exited based on buffer status in
the socket layer (or other upper layer).  This change is in
preparation for general buffer status reports from the socket layer,
which will then be used to change the local busy status.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-07 15:28:51 -03:00
Mat Martineau 02f1b64106 Bluetooth: Check earlier for L2CAP ERTM frames to drop
Even when the received tx_seq is expected, the frame still needs to be
dropped if the TX window is exceeded or the receiver is in the local
busy state.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-01 16:13:20 -03:00
Gustavo F. Padovan 2461daacb3 Bluetooth: Fix bad locking balance
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-01 16:10:06 -03:00
Joe Perches e175072f37 Bluetooth: Rename function bt_err to bt_to_errno
Make it easier to use more normal logging styles later.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-30 18:44:08 -03:00
Mat Martineau 942ecc9c46 Bluetooth: ERTM timeouts need to be converted to jiffies
ERTM timeouts are defined in milliseconds, but need to be converted
to jiffies when passed to mod_timer().

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-30 18:25:43 -03:00
Mat Martineau 774e565146 Bluetooth: Fix indentation whitespace
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-30 18:25:33 -03:00
Gustavo F. Padovan 9fa7e4f76f Bluetooth: Fix regression with incoming L2CAP connections
PTS test A2DP/SRC/SRC_SET/TC_SRC_SET_BV_02_I revealed that
( probably after the df3c3931e commit ) the l2cap connection
could not be established in case when the "Auth Complete" HCI
event does not arive before the initiator send "Configuration
request", in which case l2cap replies with "Command rejected"
since the channel is still in BT_CONNECT2 state.

Based on patch from: Ilia Kolomisnky <iliak@ti.com>

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-30 16:17:57 -03:00
Dan Rosenberg 7ac2881753 Bluetooth: Prevent buffer overflow in l2cap config request
A remote user can provide a small value for the command size field in
the command header of an l2cap configuration request, resulting in an
integer underflow when subtracting the size of the configuration request
header.  This results in copying a very large amount of data via
memcpy() and destroying the kernel heap.  Check for underflow.

Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-28 14:57:55 -03:00
Vinicius Costa Gomes 43f3dc4157 Bluetooth: Fix not setting the chan state
When the connection is ready we should set the connection
to CONNECTED so userspace can use it.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-21 14:55:04 -03:00
Gustavo F. Padovan 0555891184 Merge master.kernel.org:/pub/scm/linux/kernel/git/padovan/bluetooth-2.6
Conflicts:
	net/bluetooth/l2cap_core.c
2011-06-21 14:52:56 -03:00
Vinicius Costa Gomes e13e21dc5d Bluetooth: Remove useless access to the socket
We already have access to the chan, we don't have to access the
socket to get its imtu.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-20 16:32:11 -03:00
Vinicius Costa Gomes 6312845169 Bluetooth: Fix crash when setting a LE socket to ready
We should not try to do any other type of configuration for
LE links when they become ready.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-20 16:32:04 -03:00
Gustavo F. Padovan e2ab43536c Bluetooth: Use bit operations on conn_state
Instead of setting bits manually we use set_bit, test_bit, etc.
Also remove L2CAP_ prefix from macros.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-16 18:57:15 -03:00
Gustavo F. Padovan c1360a1cf3 Bluetooth: use bit operation on conf_state
Instead of making the bit operations manually, we now use set_bit,
test_bit, etc.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-16 18:57:14 -03:00
Vinicius Costa Gomes 5d3de7df18 Bluetooth: Add support for SMP timeout
This patch adds support for disconnecting the link when SMP procedure
takes more than 30 seconds.

SMP begins when either the Pairing Request command is sent or the
Pairing Response is received, and it ends when the link is encrypted
(or terminated). Vol 3, Part H Section 3.4.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-14 14:54:05 -03:00
Johan Hedberg df3c3931ec Bluetooth: Fix accepting connect requests for defer_setup
When authentication completes we shouldn't blindly accept any pending
L2CAP connect requests. If the socket has the defer_setup feature
enabled it should still wait for user space acceptance of the connect
request. The issue only happens for non-SSP connections since with SSP
the L2CAP Connect request may not be sent for non-SDP PSMs before
authentication has completed successfully.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-14 14:48:01 -03:00
Vinicius Costa Gomes f1cb9af557 Bluetooth: Add support for resuming socket when SMP is finished
This adds support for resuming the user space traffic when SMP
negotiation is complete.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 16:05:34 -03:00
Anderson Briglia b501d6a1dc Bluetooth: Start SMP procedure
Start SMP procedure for LE connections. This modification intercepts
l2cap received frames and call proper SMP functions to start the SMP
procedure. By now, no keys are being used.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Anderson Briglia <anderson.briglia@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 15:47:04 -03:00
Gustavo F. Padovan b569450682 Bluetooth: Don't forget to check for LE_LINK
Otherwise the wrong error can be returned.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 15:11:54 -03:00
Gustavo F. Padovan 1a09bcb97c Bluetooth: keep reference if any ERTM timer is enabled
ERTM use the generic L2CAP timer functions to keep a reference to the
channel. This is useful for avoiding crashes.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 14:55:33 -03:00
Gustavo F. Padovan c9b6667537 Bluetooth: Make timer functions generic
We now plan to use l2cap_set_timer and l2cap_clear_timer in ERTM timers.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 14:55:33 -03:00
Gustavo F. Padovan 71ba0e569b Bluetooth: Add refcnt to struct l2cap_chan
struct l2cap_chan has now its own refcnt that is compatible with the
socket refcnt, i.e., we won't see sk_refcnt = 0 and chan->refcnt > 0.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 14:55:33 -03:00
Gustavo F. Padovan 89bc500e41 Bluetooth: Add state tracking to struct l2cap_chan
Now socket state is tracked by struct sock and channel state is tracked by
chan->state. At this point both says the same, but this is going to change
when we add AMP Support for example.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 14:55:33 -03:00
Gustavo F. Padovan ba3bd0ee39 Bluetooth: add close() callback to l2cap_chan_ops
close() calls l2cap_sock_kill() on l2cap_sock.c

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 14:55:33 -03:00
Gustavo F. Padovan 2307049422 Bluetooth: add recv() callback to l2cap_chan_ops
This abstracts the call to sock_queue_recv_skb() into
l2cap_chan_ops->recv().

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 14:55:33 -03:00
Gustavo F. Padovan 80808e431e Bluetooth: Add l2cap_chan_ops abstraction
Add an abstraction layer between L2CAP core and its users (only
l2cap_sock.c now). The first function implemented is new_connection() that
replaces calls to l2cap_sock_alloc() in l2cap_core.c

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 14:55:32 -03:00
Gustavo F. Padovan dc50a06dac Bluetooth: Merge l2cap_chan_create() in the l2cap_sock_alloc()
As a first step to remove l2cap_sock_alloc() and l2cap_sock_init() from
l2cap_core.c

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 14:55:32 -03:00
Mat Martineau e694928067 Bluetooth: Fix check for the ERTM local busy state
Local busy is encoded in a bitfield, but was not masked out correctly.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:19 -03:00
Mat Martineau d8d69c54fb Bluetooth: Restore accidentally-deleted line
When code was moved from l2cap_core.c to l2cap_sock.c in commit
6de0702b5b, one line was dropped
from the old __l2cap_sock_close() implementation. This sk_state
change should still be in l2cap_chan_close().

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:19 -03:00
Jaikumar Ganesh 14b12d0b98 Bluetooth: Add BT_POWER L2CAP socket option.
Add BT_POWER socket option used to control the power
characteristics of the underlying ACL link. When the remote end
has put the link in sniff mode and the host stack wants to send
data we need need to explicitly exit sniff mode to work well with
certain devices (For example, A2DP on Plantronics Voyager 855).
However, this causes problems with HID devices.

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

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

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

Signed-off-by: Jaikumar Ganesh <jaikumar@google.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:19 -03:00
Johannes Berg b5ad8b7f8c Bluetooth: fix sparse & gcc warnings
sparse complains about a few things that should
be static.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:18 -03:00
Gustavo F. Padovan 0f85272496 Bluetooth: Rename __l2cap_chan_close() to l2cap_chan_close()
To make it consistent with the rest of the API.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:16 -03:00
Gustavo F. Padovan 500698d3fd Bluetooth: Remove export of l2cap_chan_clear_timer()
The call to l2cap_chan_clear_timer() is not really needed in l2cap_sock.c.
This patch also adds a call to l2cap_chan_clear_timer() to the only place
in __l2cap_sock_close() that wasn't calling it. It's safe call it there
because l2cap_chan_clear_timer() check first for timer_peding().

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:16 -03:00
Gustavo F. Padovan ab07801d28 Bluetooth: create channel timer to replace sk_timer
The new timer does not belong to struct sock, tought it still touch some
sock things, but this will be sorted out soon.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:16 -03:00
Gustavo F. Padovan 715ec005cd Bluetooth: Add chan->chan_type struct member
chan_type says if our chan is raw(direclty access to HCI),
connection less or connection oriented.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:16 -03:00
Gustavo F. Padovan 9a91a04a95 Bluetooth: Create l2cap_chan_send()
This move all the sending logic to l2cap_core.c, but we still have a
socket dependence there, struct msghdr. It will be removed in some of the
further commits.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:16 -03:00
Gustavo F. Padovan 4519de9a04 Bluetooth: Create __l2cap_chan_close()
This is actually __l2cap_sock_close() renamed to __l2cap_chan_close().
At a first look it may not make sense, but with the further cleanups that
will come it will.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:16 -03:00
Gustavo F. Padovan 78676a0626 Bluetooth: fix set but not used warning
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:15 -03:00
Ruiyi Zhang 224f8af0db Bluetooth: Allow unsegmented SDU retries on sock_queue_rcv_skb failure
In L2CAP_SDU_UNSEGMENTED case, if sock_queue_rcv_skb returns error,
l2cap_ertm_reassembly_sdu should not return 0 so as to insert the
skb into BUSY_QUEUE for later retries.

Signed-off-by: Ruiyi Zhang <Ruiyi.Zhang@Atheros.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:15 -03:00
Johannes Berg a7567b2059 bluetooth l2cap: fix locking in l2cap_global_chan_by_psm
read_lock() ... read_unlock_bh() is clearly bogus.
This was broken by

commit 23691d75cd
Author: Gustavo F. Padovan <padovan@profusion.mobi>
Date:   Wed Apr 27 18:26:32 2011 -0300

    Bluetooth: Remove l2cap_sk_list

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 14:35:54 -04:00
David S. Miller 6dcae1eaee bluetooth: Fix warnings in l2cap_core.c
net/bluetooth/l2cap_core.c: In function ‘l2cap_recv_frame’:
net/bluetooth/l2cap_core.c:3758:15: warning: ‘sk’ may be used uninitialized in this function
net/bluetooth/l2cap_core.c:3758:15: note: ‘sk’ was declared here
net/bluetooth/l2cap_core.c:3791:15: warning: ‘sk’ may be used uninitialized in this function
net/bluetooth/l2cap_core.c:3791:15: note: ‘sk’ was declared here

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-16 23:09:26 -04:00
John W. Linville e00cf3b9eb Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts:
	drivers/net/wireless/iwlwifi/iwl-agn-tx.c
	net/mac80211/sta_info.h
2011-05-16 19:32:19 -04:00
Gustavo F. Padovan 55183d06cd Bluetooth: Remove leftover debug messages
They were added by me while testing and I forgot to remove.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-05-12 01:53:46 -03:00
John W. Linville a70171dce9 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts:
	drivers/net/wireless/libertas/if_cs.c
	drivers/net/wireless/rtlwifi/pci.c
	net/bluetooth/l2cap_sock.c
2011-05-05 13:32:35 -04:00
Gustavo F. Padovan 23691d75cd Bluetooth: Remove l2cap_sk_list
A new list was added to replace the socket based one. This new list
doesn't depent on sock and then fits better inside l2cap_core.c code.

It also rename l2cap_chan_alloc() to l2cap_chan_create() and
l2cap_chan_free() to l2cap_chan_destroy)

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-05-05 13:47:45 -03:00
Gustavo F. Padovan 73b2ec1853 Bluetooth: Handle psm == 0 case inside l2cap_add_psm()
When the user doesn't specify a psm we have the choose one for the
channel. Now we do this inside l2cap_add_psm().

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-05-05 13:47:41 -03:00
Gustavo F. Padovan 9e4425fff9 Bluetooth: Add l2cap_add_psm() and l2cap_add_scid()
The intention is to get rid of the l2cap_sk_list usage inside
l2cap_core.c. l2cap_sk_list will soon be replaced by a list that does not
depend on socket usage.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-05-05 13:47:38 -03:00
Gustavo F. Padovan 6ff5abbf4e Bluetooth: Fix memory leak with L2CAP channels
A new l2cap_chan_free() is added to free the channels.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-28 01:10:01 -03:00