[PATCH BlueZ v5 0/3] Add initial Channel Sounding Reflector

[Naga Bhavani Akella <naga.akella@oss.qualcomm.com>]

This patch series introduces initial support for Bluetooth Channel Sounding
(CS) using the raw HCI interface.
This series lays the groundwork for CS support by adding commonly
required protocol definitions, configuration parsing, and event handling
for the reflector role.

The changes include:

  1) Introduction of raw HCI support structures and callbacks for Channel
     Sounding procedures and events. This provides the foundational data
     definitions and HCI subevent handling needed by higher-level profiles.

  2) Addition of Channel Sounding configuration parsing from the BlueZ
     configuration file.This patch also updates the systemd
     service capability bounding set to include CAP_NET_RAW, which is
     required for bluetoothd to receive and process LE Channel Sounding
     events when running under a constrained systemd environment.

  3) Implementation of HCI LE Channel Sounding event handling in the Ranging
     profile for the reflector role. This includes opening a raw HCI channel,
     parsing relevant CS LE events, routing them to the RAP profile

Patch overview:
 1/3 shared: rap: introduce Channel Sounding HCI raw interface support
 2/3 main.conf: add Channel Sounding config parsing support
 3/3 profiles: ranging: add HCI LE Channel Sounding event handling (reflector)

Naga Bhavani Akella (3):
  shared: rap: Introduce Channel Sounding HCI raw  interface support
  main.conf: Add Channel Sounding config parsing  support
  profiles: ranging: Add HCI LE Event Handling in  Reflector role

 Makefile.plugins           |    3 +-
 profiles/ranging/rap.c     |   83 ++-
 profiles/ranging/rap_hci.c | 1288 ++++++++++++++++++++++++++++++++++++
 src/bluetooth.service.in   |    2 +-
 src/btd.h                  |    7 +
 src/main.c                 |  129 ++++
 src/main.conf              |   24 +
 src/shared/hci.c           |   67 +-
 src/shared/hci.h           |   12 +
 src/shared/rap.c           |   50 +-
 src/shared/rap.h           |  174 +++++
 11 files changed, 1813 insertions(+), 26 deletions(-)
 create mode 100644 profiles/ranging/rap_hci.c

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