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wireless/bluetooth/nimble: make transport ACL buffer count configurable

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The controller<->host ACL pool was hardcoded to 10 buffers (~6 KiB with
the 251-byte ACL size). Expose NIMBLE_TRANSPORT_ACL_FROM_LL_COUNT and
NIMBLE_TRANSPORT_ACL_FROM_HS_COUNT (default 10) so RAM-constrained
single-connection peripherals can lower it.

Signed-off-by: raiden00pl <raiden00@railab.me>
This commit is contained in:
raiden00pl 2026-07-11 20:46:30 +02:00 • committed by Alin Jerpelea
parent 850f481344
commit f5b2c354ca
2 changed files with 14 additions and 2 deletions
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12
wireless/bluetooth/nimble/Kconfig
View file

@ -219,6 +219,18 @@ config NIMBLE_MSYS_2_BLOCK_SIZE
int "NimBLE MSYS_2 block size"
default 0
config NIMBLE_TRANSPORT_ACL_FROM_LL_COUNT
int "NimBLE transport ACL buffer count (controller to host)"
default 10
---help---
Number of ACL buffers in the transport pool.
config NIMBLE_TRANSPORT_ACL_FROM_HS_COUNT
int "NimBLE transport ACL buffer count (host to controller)"
default 10
---help---
Number of ACL buffers in the transport pool.
endmenu # "NimBLE memory configuration"
config NIMBLE_PORTING_EXAMPLE

4
wireless/bluetooth/nimble/include/syscfg/syscfg.h
View file

@ -57,8 +57,8 @@
/* Transport configuration */
#define MYNEWT_VAL_BLE_TRANSPORT_ACL_FROM_HS_COUNT (10)
#define MYNEWT_VAL_BLE_TRANSPORT_ACL_FROM_LL_COUNT (10)
#define MYNEWT_VAL_BLE_TRANSPORT_ACL_FROM_HS_COUNT (CONFIG_NIMBLE_TRANSPORT_ACL_FROM_HS_COUNT)
#define MYNEWT_VAL_BLE_TRANSPORT_ACL_FROM_LL_COUNT (CONFIG_NIMBLE_TRANSPORT_ACL_FROM_LL_COUNT)
#define MYNEWT_VAL_BLE_TRANSPORT_ACL_SIZE (251)
#define MYNEWT_VAL_BLE_TRANSPORT_EVT_COUNT (4)
#define MYNEWT_VAL_BLE_TRANSPORT_EVT_DISCARDABLE_COUNT (16)