[backport v3.5-branch] Bluetooth: Controller: Few control procedure and compiler re-ordering fixes #74112
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cvinayak
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erbr-ot
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Jun 12, 2024
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@cvinayak do you have a tracking bug for this? big PR for a backport btw, is it all reallly needed? |
In ull_disable, it is imperative that the callback is set up before a second reference counter check, otherwise it may happen that an LLL done event has already passed when the disable callback and semaphore is assigned. This causes the HCI thread to wait until timeout and assert after ull_ticker_stop_with_mark. For certain compilers, due to compiler optimizations, it can be seen from the assembler code that the callback is assigned after the second reference counter check. By adding memory barriers, the code correctly reorders code to the expected sequence. Signed-off-by: Morten Priess <[email protected]> (cherry picked from commit 7f82b6a) Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>
In case a CPR is intiated but rejected due to CPR active on other connection, rx nodes are leaked due to retained node not being properly released. Signed-off-by: Erik Brockhoff <[email protected]> (cherry picked from commit edef1b7) Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>
Ensure that in LLCP reference to node_rx is cleared when retention is NOT used, to avoid corruption of node_rx later re-allocated Signed-off-by: Erik Brockhoff <[email protected]> (cherry picked from commit 806a4fc) Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>
Only perform retention if not already done. Ensure 'sched' is performed on phy ntf even if dle is not. Signed-off-by: Erik Brockhoff <[email protected]> (cherry picked from commit 9d8059b) Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>
Fix missing validation of Connection Update Ind PDU. Ignore invalid connection update parameters and force a silent local connection termination. Signed-off-by: Vinayak Kariappa Chettimada <[email protected]> (cherry picked from commit 4b6d3f1) Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>
Refactor reused function in BT_CTLR_LE_ENC feature. Signed-off-by: Vinayak Kariappa Chettimada <[email protected]> (cherry picked from commit fe205a5) Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>
A Host shall consider any error code that it does not explicitly understand equivalent to the error code Unspecified Error (0x1F). Signed-off-by: Vinayak Kariappa Chettimada <[email protected]> (cherry picked from commit 78466c8) Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>
Add unit tests to cover explicit LLCP error code check and cover the same in the Controller implementation. Signed-off-by: Vinayak Kariappa Chettimada <[email protected]> (cherry picked from commit d6f2bc9) Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>
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fabiobaltieri
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Add unit tests to cover explicit LLCP error code check and
cover the same in the Controller implementation.
A Host shall consider any error code that it does not
explicitly understand equivalent to the error code
Unspecified Error (0x1F).
Refactor reused function in BT_CTLR_LE_ENC feature.
Fix missing validation of Connection Update Ind PDU. Ignore
invalid connection update parameters and force a silent
local connection termination.
Only perform retention if not already done.
Ensure 'sched' is performed on phy ntf even if dle is not.
Ensure that in LLCP reference to node_rx is cleared when
retention is NOT used, to avoid corruption of node_rx later
re-allocated
In case a CPR is intiated but rejected due to CPR active on
other connection, rx nodes are leaked due to retained node not
being properly released.
In ull_disable, it is imperative that the callback is set up before a
second reference counter check, otherwise it may happen that an LLL done
event has already passed when the disable callback and semaphore is
assigned.
This causes the HCI thread to wait until timeout and assert after
ull_ticker_stop_with_mark.
For certain compilers, due to compiler optimizations, it can be seen
from the assembler code that the callback is assigned after the second
reference counter check.
By adding memory barriers, the code correctly reorders code to the
expected sequence.
Fixes #75981.