When a running procedure receives a REJECT or UNKNOWN_RSP PDU that is
not an expected part of the procedure flow this leads to termination
of the connection
This affects procedures:
CU/CPR, CTE, PHY, PING, DLE, FEX, VEX, CHMU
Unit tests are updated to cover the updated behaviour.
Signed-off-by: Erik Brockhoff <erbr@oticon.com>
Rewrite the entire Procedure Response Timeout mechanism.
Use two separate timers for local and remote initiated procedures.
Signed-off-by: Thomas Ebert Hansen <thoh@oticon.com>
llcp_lr_pause()/llcp_rr_pause() only pauses currently pending procedures
in their respective request machines, any future initiations are not
paused, thus they are allowed to run, when the opposite was expected.
Change the procedure pause logic into a global pause on the request
machines them self, this is essence what the per-procedure pause
flag was trying to achieve.
Add new query function llcp_?r_ispaused() to not expose the logic behind
the pause functionality.
Signed-off-by: Thomas Ebert Hansen <thoh@oticon.com>
Change LLCP TX data pause into using mask to allow for pausing from
multiple different sources - but only once per source
(the underlying TX queue still just has an integer counter).
Signed-off-by: Erik Brockhoff <erbr@oticon.com>
Signed-off-by: Thomas Ebert Hansen <thoh@oticon.com>
Add a separate procedure context pool for remote initiated procedures.
Make it configurable in size by BT_CTLR_LLCP_REMOTE_PROC_CTX_BUF_NUM.
Fix all unit tests referring to the amount of free context buffers.
Fixes#41823
Signed-off-by: Thomas Ebert Hansen <thoh@oticon.com>
Move the mem_pool structure to the internal header for wider access.
Introduce a mem_pool owner in the proc_ctx, sch that multiple mem_pool
could be used for memory management of proc_ctx, also static 'foreign'
allocated proc_ctx would be supported by this.
Signed-off-by: Thomas Ebert Hansen <thoh@oticon.com>
There were some references to slave and master left in the unittests
for the refactored LLCP.
These are changed in respectively peripheral and central
Signed-off-by: Andries Kruithof <Andries.Kruithof@nordicsemi.no>
There are packet restrictions imposed by PHY update procedure
for PDU that includes CTE (BT Core 5.3 :
- central/peripheral can't send PDU with CTE after receive or send
LLPHY_UPDATE_IND until instant if the PHY after instant is CODED
- peripheral can't send PDU including CTE after it sends LL_PHY_REQ
PDU until receive LL_PHY_UPDATE_IND, LL_UNKNOWN_RSP, LL_REJECTED_EXT_-
IND_PDU if there is a CODE PHY in TX_PHYS
- peripheral can't send PDU including CTE after it sends LL_PHY_RSP
PDU until receive LL_PHY_UPDATE_IND if there is a CODED PHY in TX_PHYS
of LL_PHY_RSP PDU or RX_PHYS of LL_PHY_REQ PDU.
The BT 5.3 Core spec defines only one PDU that may include CTE, that is
LL_CTE_RSP PDU. To avoid a situation that there is such PDU enqueued
for transmission in LLL when packet transmission restrictions should
be applied, both procedures in almost all cases will not be executed
in parallel.
Current implementation always handles remote procedurerequest first.
There are possible three scenarios:
1. Remotely requested PHY update. Locally initiated CTE REQ.
In this case there is no problem with LL_CTE_RSP waiting in a TX
queue in LLL. Both procedures may be executed one after another.
2. Remotely requested CTE REQ. Locally initiated PHY update.
In this case the CTE REQ is handled first and it will pause the
PHY update procedure until LL_CTE_RSP PDU is acknowledged by
remote. Then the CTE REQ procedure will be completed and PHY update
continued.
3. Locally initiated PHY update is pending. Arrives remote CTE REQ.
In this case the CTE REQ will be paused until localy initiated PHY
update is completed. Then the CTE REQ will be continued.
Thanks to that there should be no PDU including CTE in LLL TX quueue.
That releases us from a situation there is a LL_CTE_RSP PDU in the
LLL TX qeueue that must be changed into LL_REJECT_EXT_IND PDU due to
change of PHY to CODED PHY after PHY update procedure completes.
Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
CTE request control procedure may failed due to rejection by
peer device or due to receive of LL_CTE_RSP PDU without CTE.
These events has to be reported to host by HCI_LE_CTE_Request_Failed.
The commit adds missing functionalit.
Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
There are data received from peer device with CTE request.
These data are not part of local CTE request procedure and
they don't belong to CTE response configuration, hence separate
storage was provided.
Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
Part of the CTE request procdure that is related with handling of
remote request should be compiled when CTE RSP is enabled.
Withouth it CTE response will not work. Local CTE request does not
need code reponsible for handling of remote reques.
The commit changes conditional compilation guards.
Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
The llcp_pdu_encode_cte_rsp functio didn't set pdu_data fields related
with CTE transmission. The commit fixes that.
Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
Implementing the final parts of procedure pause mechanism
This is needed to bar procedures from generating pdus during encryption
procedure handling
Signed-off-by: Erik Brockhoff <erbr@oticon.com>
wip
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>
