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Bluetooth: Controller: Add Kconfig for experimental AD Data Chaining

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Add a Kconfig for Advertising Data Chaining in Extended and
Periodic Advertising, permitting AD data lengths of upto
1650 bytes. The implementation is experimental and needs
further testing.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2022-09-03 07:27:11 +05:30 • committed by Carles Cufí
commit b304eaa29b
3 changed files with 21 additions and 2 deletions
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16
subsys/bluetooth/controller/Kconfig.ll_sw_split
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@ -189,6 +189,22 @@ config BT_CTLR_ADV_SYNC_SET
help
Maximum supported periodic advertising sets.
config BT_CTLR_ADV_DATA_CHAIN
bool "Advertising Data chaining [EXPERIMENTAL]"
select EXPERIMENTAL
help
Enable support for Advertising Data chaining in Extended and
Periodic Advertising. This will allow to have Advertising Data Length
upto 1650 bytes.
This is experimental and work in progress, does not implement
recombining the AD Data and could return BT_HCI_ERR_PACKET_TOO_LONG
when a chain PDU needs its AD data overflow into a new chain PDU.
I.e. AD data in the last PDU could overflow due to the need to add
Aux Pointer field, and if this overflow bytes plus the next AD data
fragment length could be over 255 bytes needing additional chain PDU.
This is not implemented.
config BT_CTLR_ADV_PDU_LINK
# Enables extra space in each advertising PDU to allow linking PDUs.
# This is required to enable advertising data trains (i.e. transmission