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2014-11-11Bluetooth: Fix sparse warning in amp.cJohan Hedberg1-9/+16
This fixes the following sparse warning: net/bluetooth/amp.c:152:53: warning: Variable length array is used. The warning itself is probably harmless since this kind of usage of shash_desc is present also in other places in the kernel (there's even a convenience macro SHASH_DESC_ON_STACK available for defining such stack variables). However, dynamically allocated versions are also used in several places of the kernel (e.g. kernel/kexec.c and lib/digsig.c) which have the benefit of not exhibiting the sparse warning. Since there are no more sparse warnings in the Bluetooth subsystem after fixing this one it is now easier to spot whenever new ones might get introduced by future patches. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-09-08Bluetooth: LLVMLinux: Remove VLAIS from bluetooth/amp.cBehan Webster1-7/+6
Replaced the use of a Variable Length Array In Struct (VLAIS) with a C99 compliant equivalent. This patch allocates the appropriate amount of memory using an char array. The new code can be compiled with both gcc and clang. struct shash_desc contains a flexible array member member ctx declared with CRYPTO_MINALIGN_ATTR, so sizeof(struct shash_desc) aligns the beginning of the array declared after struct shash_desc with long long. No trailing padding is required because it is not a struct type that can be used in an array. The CRYPTO_MINALIGN_ATTR is required so that desc is aligned with long long as would be the case for a struct containing a member with CRYPTO_MINALIGN_ATTR. Signed-off-by: Behan Webster <behanw@converseincode.com> Signed-off-by: Mark Charlebois <charlebm@gmail.com> Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-07-20Bluetooth: Remove unneeded variable assignment in hmac_sha256Marcel Holtmann1-1/+1
The variable ret does not need to be assigned when declaring it. So remove this initial assignment. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-07-16Bluetooth: Add a role parameter to hci_conn_add()Johan Hedberg1-2/+2
We need to be able to track slave vs master LE connections in hci_conn_hash, and to be able to do that we need to know the role of the connection by the time hci_conn_add_has() is called. This means in practice the hci_conn_add() call that creates the hci_conn_object. This patch adds a new role parameter to hci_conn_add() function to give the object its initial role value, and updates the callers to pass the appropriate role to it. Since the function now takes care of initializing both conn->role and conn->out values we can remove some other unnecessary assignments. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-10-13Bluetooth: Remove l2cap_conn->dst usage from AMP managerMarcel Holtmann1-2/+3
The l2cap_conn->dst address is just a pointer into the hci_conn->dst structure. Use hci_conn->dst directly instead. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-11Bluetooth: Move a2mp.h header file into net/bluetooth/Marcel Holtmann1-1/+1
The a2mp.h header file is only used internally by the bluetooth.ko module and is not a public API. So make it local to the core Bluetooth module. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-11Bluetooth: Move amp.h header file into net/bluetooth/Marcel Holtmann1-1/+2
The amp.h header file is only used internally by the bluetooth.ko module and is not a public API. So make it local to the core Bluetooth module. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-01-09Bluetooth: AMP: Use set_bit / test_bit for amp_mgr stateAndrei Emeltchenko1-2/+2
Using bit operations solves problems with multiple requests and clearing state. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-01-09Bluetooth: AMP: Clean up logical link create / acceptAndrei Emeltchenko1-12/+5
Use chan->hs_hcon instead of lookup by dst address. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-01-09Bluetooth: AMP: Send A2MP Create Phylink Rsp after Assoc writeAndrei Emeltchenko1-1/+3
Postpone sending A2MP Create Phylink Response until we got successful HCI Command Complete after HCI Write Remote AMP Assoc. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-11-20Bluetooth: Set local_amp_id after getting Phylink Completed evtAndrei Emeltchenko1-0/+1
local_amp_id is used in l2cap_physical_cfm and shall be set up before calling 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>
2012-11-19Bluetooth: Disable FCS only for new HS channelsAndrei Emeltchenko1-1/+0
Set chan->fcs to L2CAP_FCS_NONE only for new L2CAP channels (not moved). Other side can still request to use FCS. 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>
2012-11-19Bluetooth: Refactor locking in amp_physical_cfmAndrei Emeltchenko1-1/+5
Remove locking from l2cap_physical_cfm and lock chan inside amp_physical_cfm. 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>
2012-11-01Bluetooth: Rename ctrl_id to remote_amp_idAndrei Emeltchenko1-3/+2
Since we have started to use local_amp_id for local AMP Controller Id it makes sense to rename ctrl_id to remote_amp_id since it represents remote AMP controller Id. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-11-01Bluetooth: AMP: Use l2cap_physical_cfm in phylink complete evtAndrei Emeltchenko1-0/+24
When receiving HCI Phylink Complete event run amp_physical_cfm which initialize BR/EDR L2CAP channel associated with High Speed link and run l2cap_physical_cfm which shall send L2CAP Create Chan Request. 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>
2012-11-01Bluetooth: Disconnect logical link when deleting chanAndrei Emeltchenko1-0/+14
Disconnect logical link for high speed channel hs_hchan associated with L2CAP channel chan. 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>
2012-11-01Bluetooth: AMP: Process Disc Logical LinkAndrei Emeltchenko1-0/+7
Add processing for HCI Disconnection 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>
2012-11-01Bluetooth: AMP: Add Logical Link Create functionAndrei Emeltchenko1-0/+49
After physical link is created logical link needs to be created. The process starts after L2CAP channel is created and L2CAP Configuration Response with result PENDING is received. 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>
2012-10-18Bluetooth: AMP: Get amp_mgr reference in HS hci_connAndrei Emeltchenko1-1/+1
When assigning amp_mgr in hci_conn (type AMP_LINK) get also reference. In hci_conn_del those references would be put for both conn types AMP_LINK and ACL_LINK associated with amp_mgr. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-08Bluetooth: AMP: Factor out phylink_addAndrei Emeltchenko1-2/+4
Add direction parameter to phylink_add since it is anyway set later. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-08Bluetooth: AMP: Factor out amp_ctrl_addAndrei Emeltchenko1-3/+4
Add ctrl_id parameter to amp_ctrl_add since we always set it after function ctrl is created. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-10-08Bluetooth: AMP: Fix possible NULL dereferenceAndrei Emeltchenko1-0/+4
Check that link key exist before accessing. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27Bluetooth: AMP: Handle Accept phylink command status evtAndrei Emeltchenko1-1/+1
When receiving HCI Command Status event for Accept Physical Link execute HCI Write Remote AMP Assoc with data saved from A2MP Create Physical Link Request. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27Bluetooth: AMP: Accept Physical LinkAndrei Emeltchenko1-0/+19
When receiving A2MP Create Physical Link message execute HCI Accept Physical Link command to AMP controller. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27Bluetooth: AMP: Process Chan Selected eventAndrei Emeltchenko1-0/+15
Channel Selected event indicates that link information data is available. Read it with Read Local AMP Assoc command. The data shall be sent in the A2MP Create Physical Link Request. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27Bluetooth: AMP: Write remote AMP AssocAndrei Emeltchenko1-0/+80
When receiving HCI Command Status after HCI Create Physical Link execute HCI Write Remote AMP Assoc command to AMP controller. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27Bluetooth: AMP: Create Physical LinkAndrei Emeltchenko1-0/+19
When receiving A2MP Get AMP Assoc Response execute HCI Create Physical Link to AMP controller. Define function which will run when receiving HCI Command Status. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27Bluetooth: AMP: Add AMP key calculationAndrei Emeltchenko1-0/+45
Function calculates AMP keys using hmac_sha256 helper. Calculated keys are Generic AMP Link Key (gamp) and Dedicated AMP Link Key with keyID "802b" for 802.11 PAL. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27Bluetooth: Add function to derive AMP key using hmacDmitry Kasatkin1-0/+36
hmac(sha256) will be used for AMP key generation. Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com> Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27Bluetooth: AMP: Remote AMP ctrl definitionsAndrei Emeltchenko1-0/+79
Create remote AMP controllers structure. It is used to keep information about discovered remote AMP controllers by A2MP protocol. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27Bluetooth: AMP: Physical link struct and helpersAndrei Emeltchenko1-0/+29
Define physical link structures. Physical links are represented by hci_conn structure. For BR/EDR we use type ACL_LINK and for AMP we use AMP_LINK. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27Bluetooth: AMP: Use HCI cmd to Read Loc AMP AssocAndrei Emeltchenko1-0/+45
When receiving A2MP Get AMP Assoc Request execute Read Local AMP Assoc HCI command to AMP controller. If the AMP Assoc data is larger than it can fit to HCI event only fragment is read. When all fragments are read send A2MP Get AMP Assoc Response. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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