# Copyright (c) 2019 Alexander Wachter
# SPDX-License-Identifier: Apache-2.0

config NET_L2_CANBUS
	bool "Enable CANBUS L2 layer [EXPERIMENTAL]"
	depends on CAN_NET
	select NET_6LO
	help
	  Add a CANBUS L2 layer driver. This is the layer for IPv6 over CAN
	  (6loCAN). It uses IPHC to compress the IP header and ISO-TP for
	  flow control and reassembling.

if NET_L2_CANBUS

config NET_L2_CANBUS_USE_FIXED_ADDR
	bool "Use fixed L2 address"
	help
	  Use a fixed L2 address for 6LoCAN instead of a random chosen one.

config NET_L2_CANBUS_FIXED_ADDR
	hex "L2 address"
	depends on NET_L2_CANBUS_USE_FIXED_ADDR
	range 0x00FF 0x3DEF

config NET_L2_CANBUS_DAD_RETRIES
	int "Number of DAD retries"
	default 5
	help
	  Number of retries for Duplicate Address Detection.
	  Greater than one only makes sense for random link layer addresses.

config NET_L2_CANBUS_STMIN
	int "STmin"
	default 0
	range 0 127
	help
	  Minimal separation time between frames in ms.
	  The timer starts when the frame is queued and the next frame is
	  transmitted after expiration.
	  STmin is chosen by the receiver and transmitted in the FC
	  (Flow Control) frame. See also: ISO 15765-2:2016

config NET_L2_CANBUS_BS
	int "BS (Block Size)"
	default 8
	range 0 256
	help
	  Number of CF (Contiguous Frame) PDUs before next FC (Flow Control)
	  frame is sent. Zero value means all frames are sent consecutive
	  without an additional FC frame.
	  A BS counter at the sender counts from one to BS. When BS is reached,
	  the sender waits for a FC frame again an BS is reset.
	  See also: ISO 15765-2:2016

config NET_L2_CANBUS_ETH_TRANSLATOR
	bool "Enable 6LoCAN to Ethernet translator"
	depends on NET_L2_ETHERNET
	help
	  Enable a 6LoCAN Ethernet translator. With this translator it is
	  possible to connect a 6LoCAN network to a Ethernet network directly,
	  via a Switch or trough a router. Messages that goes through the
	  translator have a special address and the MAC address is carried inline.
	  The packet is forwarded with uncompressed IPv6 header.

module = NET_L2_CANBUS
module-dep = NET_LOG
module-str = Log level for CANbus L2 layer
module-help = Enables CANbus L2 to output debug messages.
source "subsys/net/Kconfig.template.log_config.net"

endif # NET_L2_CANBUS

config NET_L2_CANBUS_RAW
	bool "Enable CANBUS RAW l2 layer"
	help
	  Add a CANBUS L2 layer driver. This is the layer for SOCKET CAN.