zephyr/subsys/mgmt/mcumgr/transport/Kconfig

# Copyright Runtime.io 2018. All rights reserved.
# Copyright Nordic Semiconductor ASA 2020-2022. All rights reserved.
# SPDX-License-Identifier: Apache-2.0

# The Kconfig file is dedicated to transport subdirectory of MCUmgr
# subsystem and provides Kconfig options to control aspects of
# transport, in general, that are not otherwise controlled by
# options belonging to transport specifically.
#
# Options defined in this file should be prefixed:
#  MCUMGR_TRANSPORT_ -- general transport options;
#  MCUMGR_TRANSPORT_WORKQUEUE -- for workqueue configuration;
#  MCUMGR_TRANSPORT_NETBUF -- for Net Buf related configuration.

config MCUMGR_TRANSPORT_WORKQUEUE_STACK_SIZE
	int "MCUmgr transport workqueue stack size"
	default 2048
	help
	  Stack size of the MCUmgr for transport subsystem work queue.

config MCUMGR_TRANSPORT_WORKQUEUE_THREAD_PRIO
	int "MCUmgr transport workqueue thread priority"
	default 3
	help
	  Scheduling priority of the MCUmgr transport subsystem work queue.

config MCUMGR_TRANSPORT_REASSEMBLY
	bool
	help
	  Enable structures and functions needed for packet reassembly by SMP backend.

config MCUMGR_TRANSPORT_NETBUF_COUNT
	int "Number of mcumgr buffers"
	default 2 if MCUMGR_TRANSPORT_UDP
	default 4
	help
	  The number of net_bufs to allocate for mcumgr.  These buffers are
	  used for both requests and responses.

config MCUMGR_TRANSPORT_NETBUF_SIZE
	int "Size of each mcumgr buffer"
	default 2048 if MCUMGR_TRANSPORT_UDP
	default 384
	help
	  The size, in bytes, of each mcumgr buffer.  This value must satisfy
	  the following relation:
	  MCUMGR_TRANSPORT_NETBUF_SIZE >= transport-specific-MTU + transport-overhead
	  In case when MCUMGR_TRANSPORT_SHELL is enabled this value should be set to
	  at least MCUMGR_GRP_SHELL_BACKEND_DUMMY_BUF_SIZE + 32.

config MCUMGR_TRANSPORT_NETBUF_MIN_USER_DATA_SIZE
	int
	default 24 if MCUMGR_TRANSPORT_UDP && NET_IPV6
	default 8 if MCUMGR_TRANSPORT_UDP && MCUMGR_TRANSPORT_UDP_IPV4
	default 8 if MCUMGR_TRANSPORT_BT
	default 4
	help
	  Hidden option to determine minimum user data size.

config MCUMGR_TRANSPORT_NETBUF_USER_DATA_SIZE
	int "Size of mcumgr buffer user data"
	range MCUMGR_TRANSPORT_NETBUF_MIN_USER_DATA_SIZE 128
	default MCUMGR_TRANSPORT_NETBUF_MIN_USER_DATA_SIZE
	help
	  The size, in bytes, of user data to allocate for each mcumgr buffer.

	  Different mcumgr transports impose different requirements for this
	  setting. A value of 4 is sufficient for UART and shell, a value of 8
	  is sufficient for Bluetooth. For UDP, the userdata must be large
	  enough to hold IPv4/IPv6 addresses.

module = MCUMGR_TRANSPORT
module-str = mcumgr_transport
source "subsys/logging/Kconfig.template.log_config"

rsource "Kconfig.dummy"

rsource "Kconfig.bluetooth"

rsource "Kconfig.shell"

rsource "Kconfig.uart"

rsource "Kconfig.udp"