Help¶

Maximum L2CAP MTU for L2CAP TX buffers.

Direct dependencies¶

BT_CONN && BT_HCI_HOST && BT_HCI && BT

(Includes any dependencies from ifs and menus.)

Defaults¶

253 if BT_BREDR
65 if BT_SMP
23

Kconfig definition¶

At <Zephyr>/subsys/bluetooth/host/Kconfig.l2cap:42

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:34 → <Zephyr>/subsys/Kconfig:9 → <Zephyr>/subsys/bluetooth/Kconfig:239 → <Zephyr>/subsys/bluetooth/host/Kconfig:505

Menu path: (Top) → Sub Systems and OS Services → Bluetooth → L2CAP Options

config BT_L2CAP_TX_MTU
    int "Maximum supported L2CAP MTU for L2CAP TX buffers"
    range 65 2000 if BT_SMP
    range 23 2000
    default 253 if BT_BREDR
    default 65 if BT_SMP
    default 23
    depends on BT_CONN && BT_HCI_HOST && BT_HCI && BT
    help
      Maximum L2CAP MTU for L2CAP TX buffers.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)