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Bluetooth: controller: push topic branch to main

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Pushes all work done in the topic-ble-llcp branch into main branch
This is a refactoring of the LL control procedures; the refactored
control procedures are hidden behind a KConfig option and
per default disabled

Goal of the refactoring:

close issue Link Layer Control Procedure overhaul #15256
make it easier to add/update control procedures
Refactoring consists in principal of writing explicit state machines
for the control procedures.
To reduce the risk of regression errors unit-tests have been added

Following control procedures are implemented:

Connection update procedure
Channel map update procedure
Encryption procedure
Feature exchange procedure
Version exchange procedure
ACL termination procedure
Connection parameters request procedure
LE Ping procedure
Data Length Update procedure
PHY update procedure
Min. nr. Of channels used procedure
Constant Tone extension request procedure

This is a joined work by the people listed in the signed-off-by
list (in alphabetical order)

Signed-off-by: Andries Kruithof Andries.Kruithof@nordicsemi.no
Signed-off-by: Erik Brockhoff erbr@oticon.com
Signed-off-by: Piotr Pryga piotr.pryga@nordicsemi.no
Signed-off-by: Szymon Janc szymon.janc@codecoup.pl
Signed-off-by: Thomas Ebert Hansen thoh@oticon.com
Signed-off-by: Tommie Skriver tosk@demant.com

Signed-off-by: Andries Kruithof <Andries.Kruithof@nordicsemi.no>
This commit is contained in:
Andries Kruithof 2021-11-15 09:41:12 +01:00 • committed by Anas Nashif
commit f023b5f611
161 changed files with 24482 additions and 81 deletions
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64
subsys/bluetooth/controller/Kconfig.ll_sw_split
View file

@ -74,6 +74,27 @@ config BT_CTLR_TIFS_HW_SUPPORT
config BT_CTLR_ULL_LLL_PRIO_SUPPORT
bool
choice BT_LL_SW_LLCP_IMPL
prompt "Bluetooth Low Energy Software Link Layer Control Procedure Implementation"
default BT_LL_SW_LLCP_LEGACY
help
Select the Bluetooth Low Energy Software Link Layer Control Procedure implementation.
config BT_LL_SW_LLCP_LEGACY
bool "Legacy implementation"
help
Use the Bluetooth Low Energy Software Link Layer Legacy Control Procedure implementation.
config BT_LL_SW_LLCP
bool "New implementation, replacing the legacy one [EXPERIMENTAL]"
select EXPERIMENTAL
help
Use the new Bluetooth Low Energy Software Link Layer Control Procedure implementation.
It is considered experimental because it is still under development and is not qualifiable yet.
endchoice
config BT_CTLR_RX_PRIO_STACK_SIZE
# Controller's Co-Operative high priority Rx thread stack size.
int "High priority Rx thread stack size"
@ -461,6 +482,49 @@ config BT_CTLR_LLCP_CONN
more than this number of connections simultaneously may cause
instabilities.
if !BT_LL_SW_LLCP_LEGACY
config BT_CTLR_LLCP_TX_PER_CONN_TX_CTRL_BUF_NUM_MAX
int
default 4
help
The theoretical maximum number of tx ctrl buffers needed for any connection, is 4.
two for active encryption procedure plus one for rejecting a remote request
and one for a local terminate
config BT_CTLR_LLCP_PER_CONN_TX_CTRL_BUF_NUM
int "Number of tx control buffers to be reserved per connection"
default BT_CTLR_LLCP_TX_PER_CONN_TX_CTRL_BUF_NUM_MAX
range 0 BT_CTLR_LLCP_TX_PER_CONN_TX_CTRL_BUF_NUM_MAX
help
Set the number control buffers that is to be pre allocated per connection
This defines the minimum number of buffers available for any connection
Setting this to non zero will ensure a connection will always have access
to buffer(s) for control procedure TX
config BT_CTLR_LLCP_COMMON_TX_CTRL_BUF_NUM
int "Number of tx control buffers to be available across all connections"
default 0
range 0 255
help
Set the number control buffers that is to be available for tx.
This defines the size of the pool of tx buffers available
for control procedure tx. This pool is shared across all
procedures/connections with allocation through a fifo queue.
Configure between 0 and (4 - BT_CTLR_LLCP_PER_CONN_TX_CTRL_BUF_NUM) * BT_CTLR_LLCP_CONN
config BT_CTLR_LLCP_PROC_CTX_BUF_NUM
int "Number of control procedure contexts to be available across all connections"
default BT_CTLR_LLCP_CONN
range 1 255
help
Set the number control procedure contexts that is to be available.
This defines the size of the pool of control procedure contexts available
for handlign control procedures. This pool is shared across all
connections (local vs remote initiate), with allocation through a queue
endif #!BT_LL_SW_LLCP_LEGACY
config BT_CTLR_LLID_DATA_START_EMPTY
bool "Handle zero length L2CAP start frame"
default y if BT_HCI_RAW