[PATCH BlueZ v2 0/4] Bearer.LE1: Add ReadRSSI

[Kevin Dewald <kevin@simpleble.org>]

This adds ReadRSSI to Bearer.LE1 as a testing method, for diagnostics
and production testing, as discussed on v1 [1]. It is only available
when D-Bus testing interfaces are enabled, with bluetoothd -T or
Testing = true in main.conf.

Each call sends Get Connection Information, which the kernel answers
from the controller or with the value it read in the last 1 to 3
seconds. A call made right after Connect returns fails with NotReady
until the kernel has read the remote features.

Changes in v2:
- Make ReadRSSI a testing method and mark it [testing] in the
  documentation.
- Enable testing interfaces on one host in the functional test, and
  check that the other host does not export ReadRSSI.
- Rebase on master.

Tested with the functional test on bluetooth-next 3f425f95ba39, and on
an RTL8761BU connected to an nRF52840. With -T, ReadRSSI returned
-48 dBm; without it, the method was not exported.

[1] https://lore.kernel.org/linux-bluetooth/20261112032250.37687-1-kevin@simpleble.org/

Kevin Dewald (4):
  org.bluez.Bearer: Add ReadRSSI method
  adapter: Add btd_adapter_get_conn_info
  bearer: Add ReadRSSI method
  test: functional: add bearer ReadRSSI test

 doc/org.bluez.Bearer.LE.rst    |  19 ++++++
 src/adapter.c                  |  22 +++++++
 src/adapter.h                  |   7 +++
 src/bearer.c                   | 111 ++++++++++++++++++++++++++++++++-
 test/functional/test_bearer.py |  42 +++++++++++++
 5 files changed, 199 insertions(+), 2 deletions(-)


base-commit: 20ffd285b58facfd1f2478d159a5f941b09d5be1
-- 
2.54.0 (Apple Git-157)