Hi Marcel and Luiz, The standard HCI does not provide commands/events regarding to advertisement monitoring with content filter while there are few vendors providing this feature. Chrome OS BT would like to introduce the use of vendor specific features where Microsoft vendor extension is targeted at this moment. Chrome OS BT would like to utilize Microsoft vendor extension's advertisement monitoring feature which is not yet a part of standard Bluetooth specification. This series introduces the driver information for Microsoft vendor extension, and this was verified with kernel 4.4 on Atlas Chromebook. Thanks Miao Changes in v4: - Introduce CONFIG_BT_MSFTEXT as a starting point of providing a framework to use Microsoft extension - Create include/net/bluetooth/msft.h and net/bluetooth/msft.c to facilitate functions of Microsoft extension. - Move MSFT's do_open() and do_close() from net/bluetooth/hci_core.c to net/bluetooth/msft.c. - Other than msft opcode, define struct msft_data to host the rest of information of Microsoft extension and leave a void* pointing to a msft_data in struct hci_dev. Changes in v3: - Create net/bluetooth/msft.c with struct msft_vnd_ext defined internally and change the hdev->msft_ext field to void*. - Define and expose msft_vnd_ext_set_opcode() for btusb use. - Init hdev->msft_ext in hci_alloc_dev() and deinit it in hci_free_dev(). - Introduce msft_vnd_ext_do_open() and msft_vnd_ext_do_close(). Changes in v2: - Define struct msft_vnd_ext and add a field of this type to struct hci_dev to facilitate the support of Microsoft vendor extension. - Issue a HCI_VS_MSFT_Read_Supported_Features command with __hci_cmd_sync() instead of constructing a request. Miao-chen Chou (2): Bluetooth: btusb: Indicate Microsoft vendor extension for Intel 9460/9560 and 9160/9260 Bluetooth: btusb: Read the supported features of Microsoft vendor extension drivers/bluetooth/btusb.c | 11 ++- include/net/bluetooth/hci_core.h | 5 ++ net/bluetooth/Kconfig | 9 +- net/bluetooth/Makefile | 1 + net/bluetooth/hci_core.c | 5 ++ net/bluetooth/hci_event.c | 5 ++ net/bluetooth/msft.c | 142 +++++++++++++++++++++++++++++++ net/bluetooth/msft.h | 29 +++++++ 8 files changed, 204 insertions(+), 3 deletions(-) create mode 100644 net/bluetooth/msft.c create mode 100644 net/bluetooth/msft.h -- 2.24.1