# mcumgr configuration options

# Copyright Runtime.io 2018. All rights reserved.
# SPDX-License-Identifier: Apache-2.0

menu "Management"

config MCUMGR_SMP_BT
	bool "Bluetooth mcumgr SMP transport"
	select MCUMGR
	select BT
	select BT_PERIPHERAL
	select BT_GATT_DYNAMIC_DB
	help
	  Enables handling of SMP commands received over Bluetooth.

config MCUMGR_SMP_BT_AUTHEN
	bool "Authenticated requirement for Bluetooth mcumgr SMP transport"
	depends on MCUMGR_SMP_BT
	select BT_SMP
	default y
	help
	  Enables encrypted and authenticated connection requirement to
	  Bluetooth SMP transport.

config MCUMGR_SMP_SHELL
	bool "Shell mcumgr SMP transport"
	select MCUMGR
	select SHELL
	select SHELL_BACKEND_SERIAL
	select BASE64
	help
	  Enables handling of SMP commands received over shell.  This allows
	  the shell to be use for both mcumgr commands and shell commands.

config MCUMGR_SMP_SHELL_MTU
	int "Shell SMP MTU"
	default 256
	depends on MCUMGR_SMP_SHELL
	help
	  Maximum size of SMP frames sent and received over shell.  This value
	  must satisfy the following relation:
	  MCUMGR_SMP_SHELL_MTU <= MCUMGR_BUF_SIZE + 2

config MCUMGR_SMP_UART
	bool "UART mcumgr SMP transport"
	select MCUMGR
	select UART_MCUMGR
	select BASE64
	help
	  Enables handling of SMP commands received over UART.  This is a
	  lightweight alternative to MCUMGR_SMP_SHELL.  It allows mcumgr
	  commands to be received over UART without requiring an additional
	  thread.

config MCUMGR_SMP_UART_MTU
	int "UART SMP MTU"
	default 256
	depends on MCUMGR_SMP_UART
	help
	  Maximum size of SMP frames sent and received over UART, in bytes.
	  This value must satisfy the following relation:
	  MCUMGR_SMP_UART_MTU <= MCUMGR_BUF_SIZE + 2

source "subsys/mgmt/Kconfig.mcumgr"

config MCUMGR_SMP_UDP
	bool "UDP mcumgr SMP transport"
	select MCUMGR
	select NETWORKING
	select NET_UDP
	select NET_SOCKETS
	select NET_SOCKETS_POSIX_NAMES
	help
	  Enables handling of SMP commands received over UDP.
	  Will start a thread for listening on the configured UDP port.

config MCUMGR_SMP_UDP_IPV4
	bool "UDP SMP using IPv4"
	depends on MCUMGR_SMP_UDP
	depends on NET_IPV4
	default y
	help
	  Enable SMP UDP using IPv4 addressing.
	  Can be enabled alongside IPv6 addressing.

config MCUMGR_SMP_UDP_IPV6
	bool "UDP SMP using IPv6"
	depends on MCUMGR_SMP_UDP
	depends on NET_IPV6
	help
	  Enable SMP UDP using IPv6 addressing.
	  Can be enabled alongside IPv4 addressing.

config MCUMGR_SMP_UDP_PORT
	int "UDP SMP port"
	depends on MCUMGR_SMP_UDP
	default 1337
	help
	  UDP port that SMP server will listen for SMP commands on.

config MCUMGR_SMP_UDP_STACK_SIZE
	int "UDP SMP stack size"
	depends on MCUMGR_SMP_UDP
	default 512
	help
	  Stack size of the SMP UDP listening thread

config MCUMGR_SMP_UDP_THREAD_PRIO
	int "UDP SMP thread priority"
	depends on MCUMGR_SMP_UDP
	default 0
	help
	  Scheduling priority of the SMP UDP listening thread.

config MCUMGR_SMP_UDP_MTU
	int "UDP SMP MTU"
	depends on MCUMGR_SMP_UDP
	default 1500
	help
	  Maximum size of SMP frames sent and received over UDP, in bytes.
	  This value must satisfy the following relation:
	  MCUMGR_SMP_UDP_MTU <= MCUMGR_BUF_SIZE + SMP msg overhead - address size
	  where address size is determined by IPv4/IPv6 selection.

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

config MCUMGR_BUF_SIZE
	int "Size of each mcumgr buffer"
	default 2048 if MCUMGR_SMP_UDP
	default 384
	help
	  The size, in bytes, of each mcumgr buffer.  This value must satisfy
	  the following relation:
	  MCUMGR_BUF_SIZE >= transport-specific-MTU + transport-overhead

config MCUMGR_BUF_USER_DATA_SIZE
	int "Size of mcumgr buffer user data"
	default 24 if MCUMGR_SMP_UDP && MCUMGR_SMP_UDP_IPV6
	default 8 if MCUMGR_SMP_UDP && MCUMGR_SMP_UDP_IPV4
	default 4
	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, shell, and bluetooth.
	  For UDP, the userdata must be large enough to hold a IPv4/IPv6 address.

	  Note that CONFIG_NET_BUF_USER_DATA_SIZE must be at least as big as
	  MCUMGR_BUF_USER_DATA_SIZE.

endif # MCUMGR
endmenu