[0/6] Bluetooth: Add new MGMT interface for advertising add

Message

Daniel Winkler Sept. 16, 2020, 8:15 p.m. UTC

Hi Maintainers,

This patch series defines the new two-call MGMT interface for adding
new advertising instances. Similarly to the hci advertising commands, a
mgmt call to set parameters is expected to be first, followed by a mgmt
call to set advertising data/scan response. The members of the
parameters request are optional; the caller defines a "params" bitfield
in the structure that indicates which parameters were intentionally set,
and others are set to defaults.

The main feature here is the introduction of min/max parameters and tx
power that can be requested by the client. Min/max parameters will be
used both with and without extended advertising support, and tx power
will be used with extended advertising support. After a call for hci
advertising parameters, a new TX_POWER_SELECTED event will be emitted to
alert userspace to the actual chosen tx power.

Additionally, to inform userspace of the controller LE Tx power
capabilities for the client's benefit, this series also adds an MGMT
command to query controller capabilities, which returns a flexible TLV
format for future flexibility.

All changes have been tested on hatch (extended advertising) and kukui
(no extended advertising) chromebooks with manual testing verifying
correctness of parameters/data in btmon traces, and our automated test
suite of 25 single- and multi-advertising usage scenarios.

A separate patch series will add support in bluetoothd. Thanks in
advance for your feedback!

Daniel Winkler



Daniel Winkler (6):
  Bluetooth: Add helper to set adv data
  Bluetooth: Break add adv into two mgmt commands
  Bluetooth: Use intervals and tx power from mgmt cmds
  Bluetooth: Emit tx power chosen on ext adv params completion
  Bluetooth: Query LE tx power on startup
  Bluetooth: Add MGMT command for controller capabilities

 include/net/bluetooth/hci.h      |   7 +
 include/net/bluetooth/hci_core.h |  14 +-
 include/net/bluetooth/mgmt.h     |  48 ++++
 net/bluetooth/hci_core.c         |  47 +++-
 net/bluetooth/hci_event.c        |  22 ++
 net/bluetooth/hci_request.c      |  29 ++-
 net/bluetooth/mgmt.c             | 420 ++++++++++++++++++++++++++++++-
 7 files changed, 561 insertions(+), 26 deletions(-)