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2014-02-13Bluetooth: Handle security level 4 for L2CAP connectionsMarcel Holtmann1-0/+1
With the introduction of security level 4, the L2CAP sockets need to be made aware of this new level. This change ensures that the pairing requirements are set correctly for these connections. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Introduce requirements for security level 4Marcel Holtmann2-0/+2
The security level 4 is a new strong security requirement that is based around 128-bit equivalent strength for link and encryption keys required using FIPS approved algorithms. Which means that E0, SAFER+ and P-192 are not allowed. Only connections created with P-256 resulting from using Secure Connections support are allowed. This security level needs to be enforced when Secure Connection Only mode is enabled for a controller or a service requires FIPS compliant strong security. Currently it is not possible to enable either of these two cases. This patch just puts in the foundation for being able to handle security level 4 in the future. It should be noted that devices or services with security level 4 requirement can only communicate using Bluetooth 4.1 controllers with support for Secure Connections. There is no backward compatibilty if used with older hardware. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Track Secure Connections support of remote devicesMarcel Holtmann1-0/+8
It is important to know if Secure Connections support has been enabled for a given remote device. The information is provided in the remote host features page. So track this information and provide a simple helper function to extract the status. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Add support for remote OOB input of P-256 dataMarcel Holtmann1-0/+8
The current management interface only allows to provide the remote OOB input of P-192 data. This extends the command to also accept P-256 data as well. To make this backwards compatible, the userspace can decide to only provide P-192 data or the combined P-192 and P-256 data. It is also allowed to leave the P-192 data empty if userspace only has the remote P-256 data. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Add internal function for storing P-192 and P-256 dataMarcel Holtmann1-3/+6
Add function to allow adding P-192 and P-256 data to the internal storage. This also fixes a few coding style issues from the previous helper functions for the out-of-band credentials storage. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Provide remote OOB data for Secure ConnectionsMarcel Holtmann1-2/+4
When Secure Connections has been enabled it is possible to provide P-192 and/or P-256 data during the pairing process. The internal out-of-band credentials storage has been extended to also hold P-256 data. Initially the P-256 data will be empty and with Secure Connections enabled no P-256 data will be provided. This is according to the specification since it might be possible that the remote side did not provide either of the out-of-band credentials. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Add debugfs quirk for forcing Secure Connections supportMarcel Holtmann1-0/+1
The Bluetooth 4.1 specification with Secure Connections support has just been released and controllers with this feature are still in an early stage. A handful of controllers have already support for it, but they do not always identify this feature correctly. This debugfs entry allows to tell the kernel that the controller can be treated as it would fully support Secure Connections. Using debugfs to force Secure Connections support of course does not make this feature magically appear in all controllers. This is a debug functionality for early adopters. Once the majority of controllers matures this quirk will be removed. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Add support for local OOB data with Secure ConnectionsMarcel Holtmann2-2/+9
For Secure Connections support and the usage of out-of-band pairing, it is needed to read the P-256 hash and randomizer or P-192 hash and randomizer. This change will read P-192 data when Secure Connections is disabled and P-192 and P-256 data when it is enabled. The difference is between using HCI Read Local OOB Data and using the new HCI Read Local OOB Extended Data command. The first one has been introduced with Bluetooth 2.1 and returns only the P-192 data. < HCI Command: Read Local OOB Data (0x03|0x0057) plen 0 > HCI Event: Command Complete (0x0e) plen 36 Read Local OOB Data (0x03|0x0057) ncmd 1 Status: Success (0x00) Hash C from P-192: 975a59baa1c4eee391477cb410b23e6d Randomizer R with P-192: 9ee63b7dec411d3b467c5ae446df7f7d The second command has been introduced with Bluetooth 4.1 and will return P-192 and P-256 data. < HCI Command: Read Local OOB Extended Data (0x03|0x007d) plen 0 > HCI Event: Command Complete (0x0e) plen 68 Read Local OOB Extended Data (0x03|0x007d) ncmd 1 Status: Success (0x00) Hash C from P-192: 6489731804b156fa6355efb8124a1389 Randomizer R with P-192: 4781d5352fb215b2958222b3937b6026 Hash C from P-256: 69ef8a928b9d07fc149e630e74ecb991 Randomizer R with P-256: 4781d5352fb215b2958222b3937b6026 The change for the management interface is transparent and no change is required for existing userspace. The Secure Connections feature needs to be manually enabled. When it is disabled, then userspace only gets the P-192 returned and with Secure Connections enabled, userspace gets P-192 and P-256 in an extended structure. It is also acceptable to just ignore the P-256 data since it is not required to support them. The pairing with out-of-band credentials will still succeed. However then of course no Secure Connection will b established. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Add management command for enabling Secure ConnectionsMarcel Holtmann2-0/+3
The support for Secure Connections need to be explicitly enabled by userspace. This is required since only userspace that can handle the new link key types should enable support for Secure Connections. This command handling is similar to how Secure Simple Pairing enabling is done. It also tracks the case when Secure Connections support is enabled via raw HCI commands. This makes sure that the host features page is updated as well. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Add flags and setting for Secure Connections supportMarcel Holtmann2-0/+2
The MGMT_SETTING_SECURE_CONN setting is used to track the support and status for Secure Connections from the management interface. For HCI based tracking HCI_SC_ENABLED flag is used. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Add definitions for new link key typesMarcel Holtmann1-2/+4
With the introduction of Secure Connections, the list of link key types got extended by P-256 versions of authenticated and unauthenticated link keys. To avoid any confusion the previous authenticated and unauthenticated link key types got ammended with a P912 postfix. And the two new keys have a P256 postfix now. Existing code using the previous definitions has been adjusted. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Add HCI command definition for extended OOB dataMarcel Holtmann1-0/+18
The Secure Connections feature introduces the support for P-256 strength pairings (compared to P-192 with Secure Simple Pairing). This however means that for out-of-band pairing the hash and randomizer needs to be differentiated. Two new commands are introduced to handle the possible combinations of P-192 and P-256. This add the HCI command definition for both. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Add HCI command definition for Secure Connections enablingMarcel Holtmann1-0/+11
The Secure Connections feature is optional and host stacks have to manually enable it. This add the HCI command definiton for reading and writing this setting. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-02-13Bluetooth: Add LMP feature definitions for Secure Connections supportMarcel Holtmann2-0/+7
The support for Secure Connections introduces two new controller features and one new host feature. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-01-04Bluetooth: Add quirk for disabling Delete Stored Link Key commandMarcel Holtmann1-1/+2
Some controller pretend they support the Delete Stored Link Key command, but in reality they really don't support it. < HCI Command: Delete Stored Link Key (0x03|0x0012) plen 7 bdaddr 00:00:00:00:00:00 all 1 > HCI Event: Command Complete (0x0e) plen 4 Delete Stored Link Key (0x03|0x0012) ncmd 1 status 0x11 deleted 0 Error: Unsupported Feature or Parameter Value Not correctly supporting this command causes the controller setup to fail and will make a device not work. However sending the command for controller that handle stored link keys is important. This quirk allows a driver to disable the command if it knows that this command handling is broken. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-12-12Bluetooth: Enable 6LoWPAN support for BT LE devicesJukka Rissanen3-0/+3
This is initial version of http://tools.ietf.org/html/draft-ietf-6lo-btle-00 By default the 6LoWPAN support is not activated and user needs to tweak /sys/kernel/debug/bluetooth/hci0/6lowpan file. The kernel needs IPv6 support before 6LoWPAN is usable. Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-12-09Bluetooth: Use macros for connectionless slave broadcast featuresMarcel Holtmann2-0/+12
Add the LMP feature constants for connectionless slave broadcast and use them for capability testing. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-12-05Bluetooth: Simplify l2cap_chan initialization for LE CoCJohan Hedberg1-1/+0
The values in l2cap_chan that are used for actually transmitting data only need to be initialized right after we've received an L2CAP Connect Request or just before we send one. The only thing that we need to initialize though bind() and connect() is the chan->mode value. This way all other initializations can be done in the l2cap_le_flowctl_init function (which now becomes private to l2cap_core.c) and the l2cap_le_flowctl_start function can be completely removed. Also, since the l2cap_sock_init function initializes the imtu and omtu to adequate values these do not need to be part of l2cap_le_flowctl_init. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-12-05Bluetooth: Fix CID ranges for LE CoC CID allocationsJohan Hedberg1-0/+1
LE CoC used differend CIC ranges than BR/EDR L2CAP. The start of the range is the same (0x0040) but the range ends at 0x007f (unlike BR/EDR where it goes all the way to 0xffff). Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-12-05Bluetooth: Fix LE L2CAP Connect Request handling together with SMPJohan Hedberg1-0/+1
Unlike BR/EDR, for LE when we're in the BT_CONNECT state we may or may not have already have sent the Connect Request. This means that we need some extra tracking of the request. This patch adds an extra channel flag to prevent the request from being sent a second time. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-12-05Bluetooth: Introduce L2CAP channel callback for suspendingJohan Hedberg1-0/+1
Setting the BT_SK_SUSPEND socket flag from the L2CAP core is causing a dependency on the socket. So instead of doing that, use a channel callback into the socket handling to suspend. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-12-05Bluetooth: Add new BT_SNDMTU and BT_RCVMTU socket optionsJohan Hedberg1-0/+3
This patch adds new socket options for LE sockets since the existing L2CAP_OPTIONS socket option is not usable for LE. For now, the new socket options also require LE CoC support to be explicitly enabled to leave some playroom in case something needs to be changed in a backwards incompatible way. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-12-05Bluetooth: Track LE L2CAP credits in l2cap_chanJohan Hedberg1-0/+3
This patch adds tracking of L2CAP connection oriented channel local and remote credits to struct l2cap_chan and ensures that connect requests and responses contain the right values. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-12-05Bluetooth: Add LE L2CAP flow control modeJohan Hedberg1-0/+7
The LE connection oriented channels have their own mode with its own data transfer rules. In order to implement this properly we need to distinguish L2CAP channels operating in this mode from other modes. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-12-05Bluetooth: Add basic LE L2CAP connect request receiving supportJohan Hedberg1-0/+1
This patch adds the necessary boiler plate code to handle receiving L2CAP connect requests over LE and respond to them with a proper connect response. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-12-05Bluetooth: Add definitions for LE connection oriented channelsJohan Hedberg1-0/+31
This patch adds the necessary defines and structs for LE connection oriented channels. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-12-05Bluetooth: Add module parameter to enable LE CoC supportJohan Hedberg1-0/+1
Along with the L2CAP Connection Oriented Channels features it is now allowed to use both custom fixed CIDs as well as PSM based (connection oriented connections). Since the support for this (with the subsequent patches) is still on an experimental stage, add a module parameter to enable it. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-11-16Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "Usual earth-shaking, news-breaking, rocket science pile from trivial.git" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits) doc: usb: Fix typo in Documentation/usb/gadget_configs.txt doc: add missing files to timers/00-INDEX timekeeping: Fix some trivial typos in comments mm: Fix some trivial typos in comments irq: Fix some trivial typos in comments NUMA: fix typos in Kconfig help text mm: update 00-INDEX doc: Documentation/DMA-attributes.txt fix typo DRM: comment: `halve' -> `half' Docs: Kconfig: `devlopers' -> `developers' doc: typo on word accounting in kprobes.c in mutliple architectures treewide: fix "usefull" typo treewide: fix "distingush" typo mm/Kconfig: Grammar s/an/a/ kexec: Typo s/the/then/ Documentation/kvm: Update cpuid documentation for steal time and pv eoi treewide: Fix common typo in "identify" __page_to_pfn: Fix typo in comment Correct some typos for word frequency clk: fixed-factor: Fix a trivial typo ...
2013-11-08Merge branch 'master' of ↵John W. Linville4-73/+72
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
2013-11-04Merge branch 'master' of ↵John W. Linville10-422/+89
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem Conflicts: drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h
2013-10-22Bluetooth: Remove sk member from struct l2cap_chanGustavo Padovan1-2/+0
There is no access to chan->sk in L2CAP core now. This change marks the end of the task of splitting L2CAP between Core and Socket, thus sk is now gone from struct l2cap_chan. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-10-22Bluetooth: Add L2CAP channel to skb private dataGustavo Padovan1-0/+1
Adding the channel to the skb private data makes possible to us know which channel the skb we have came from. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-10-19Bluetooth: Add support for setting DUT modeMarcel Holtmann1-0/+3
The Device Under Test (DUT) mode is useful for doing certification testing and so expose this as debugfs option. This mode is actually special since you can only enter it. Restoring normal operation means that a HCI Reset is required. The current mode value gets tracked as a new device flag and when disabling it, the correct command to reset the controller is sent. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-19Bluetooth: Expose debugfs settings for LE connection intervalMarcel Holtmann1-0/+2
For testing purposes expose the default LE connection interval values via debugfs. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-19Bluetooth: Add support for setting SSP debug modeMarcel Holtmann2-0/+3
Enabling and disabling SSP debug mode is useful for development. This adds a debugfs entry that allows to configure the SSP debug mode. On purpose this has been implemented as debugfs entry and not a public API since it is really only useful during testing and development. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-19Bluetooth: Remove interval parameter from HCI connectionMarcel Holtmann1-1/+0
The conn->interval parameter of HCI connections is not used at all and so just remove it. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-19Bluetooth: Select the own address type during initial setup phaseMarcel Holtmann1-0/+1
The own address type is based on the fact if the controller has a public address or not. This means that this detail can be just configured once during setup phase. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-18Bluetooth: Move device_add handling into hci_register_devMarcel Holtmann1-2/+0
The device_add handling can be done directly in hci_register_dev and device_remove within hci_unregister_dev. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-18Bluetooth: Add address type to device blacklist tableMarcel Holtmann1-1/+2
The device blacklist is not taking care of the address type. Actually store the address type in the list entries and also use them when looking up addresses in the table. This is actually a serious bug. When adding a LE public address to the blacklist, then it would be blocking a device on BR/EDR. And this is not the expected behavior. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-16Bluetooth: Convert idle timer to use delayed workJohan Hedberg1-2/+2
There is no need to use a timer since the entire Bluetooth subsystem runs using workqueues these days. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-10-16Bluetooth: Convert auto accept timer to use delayed workJohan Hedberg1-1/+1
Since the entire Bluetooth subsystem runs in workqueues these days there is no need to use a timer for deferring work. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2013-10-16Bluetooth: Remove enable_hs declarationMarcel Holtmann1-2/+0
This seems to be a left-over. The module parameter enable_hs has been removed, but its extern declaration is still present. It is not needed anymore, so just remove it. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-16Bluetooth: Remove duplicate definitions for advertising event typesMarcel Holtmann1-10/+5
The constants for advertising event types have been defined twice. So remove one copy of it. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-16Bluetooth: Set the scan response data when neededMarcel Holtmann1-0/+6
On controller power on and when enabling LE functionality, make sure that also the scan response data is correctly set. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-16Bluetooth: Store scan response data in HCI deviceMarcel Holtmann1-0/+2
The scan response data needs to be stored in HCI device and so add a buffer for it and also ensure to clear it when resetting the controller. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2013-10-16Bluetooth: Make mgmt_new_ltk() return voidMarcel Holtmann1-1/+1
The return value of mgmt_new_ltk() function is not used and so just change it to return void. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-10-16Bluetooth: Make mgmt_read_local_oob_data_reply_complete() return voidMarcel Holtmann1-2/+2
The return value of mgmt_read_local_oob_data_reply_complete() function is not used and so just change it to return void. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-10-16Bluetooth: Make mgmt_set_local_name_complete() return voidMarcel Holtmann1-1/+1
The return value of mgmt_set_local_name_complete() function is not used and so just change it to return void. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-10-16Bluetooth: Make mgmt_set_class_of_dev_complete() return voidMarcel Holtmann1-2/+2
The return value of mgmt_set_class_of_dev_complete() function is not used and so just change it to return void. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-10-16Bluetooth: Make mgmt_ssp_enable_complete() return voidMarcel Holtmann1-1/+1
The return value of mgmt_ssp_enable_complete() function is not used and so just change it to return void. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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