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Bluetooth: controller: Fix CONFIG_BT_CTLR_TX_BUFFER_SIZE range

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Fix CONFIG_BT_CTLR_TX_BUFFER_SIZE value range to 251 Bytes
due to implementation limitation in use of u8_t for PDU
length fields in controller Tx buffers.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2020-01-14 19:18:23 +05:30 • committed by Alberto Escolar
commit 51c46d94ed
1 changed files with 3 additions and 3 deletions
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6
subsys/bluetooth/controller/Kconfig
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@ -227,15 +227,15 @@ config BT_CTLR_TX_BUFFERS
config BT_CTLR_TX_BUFFER_SIZE
int "Tx buffer size"
range 27 16384
range 27 251
default 27
help
Size of the Tx buffers and the value returned in HCI LE Read Buffer
Size command response. If this size if greater than effective PDU size
then controller will perform fragmentation before transmitting on the
the packet on air.
Maximum is set to 16384 due to implementation limitations (use of
u16_t for size/length variables).
Maximum is set to 251 due to implementation limitations (use of
u8_t for length field in PDU buffer structure).
choice
prompt "Tx Power"