subsys/net/l2/ethernet/Kconfig

# Copyright (c) 2018 Intel Corporation.
# SPDX-License-Identifier: Apache-2.0

menuconfig NET_L2_ETHERNET
	bool "Ethernet support"
	help
	  Add support for Ethernet, enabling selecting relevant hardware drivers.
	  If NET_SLIP_TAP is selected, NET_L2_ETHERNET will enable to fully
	  simulate Ethernet through SLIP.

if NET_L2_ETHERNET

module = NET_L2_ETHERNET
module-dep = NET_LOG
module-str = Log level for Ethernet L2 layer
module-help = Enables Ethernet L2 to output debug messages.
source "subsys/net/Kconfig.template.log_config.net"

config NET_L2_ETHERNET_MGMT
	bool "Ethernet network management interface"
	select NET_MGMT
	select NET_MGMT_EVENT
	help
	  Enable support net_mgmt Ethernet interface which can be used to
	  configure at run-time Ethernet drivers and L2 settings.

config NET_VLAN
	bool "Virtual lan support"
	help
	  Enables virtual lan (VLAN) support for Ethernet.

config NET_VLAN_COUNT
	int "Max VLAN tags supported in the system"
	default 1
	range 1 255
	depends on NET_VLAN
	help
	  How many VLAN tags can be configured.

config NET_ARP
	bool "ARP"
	default y
	depends on NET_IPV4
	help
	  Enable ARP support. This is necessary on hardware that requires it to
	  get IPv4 working (like Ethernet devices).

config NET_ARP_TABLE_SIZE
	int "Number of entries in ARP table."
	depends on NET_ARP
	default 2
	help
	  Each entry in the ARP table consumes 22 bytes of memory.

config NET_ARP_GRATUITOUS
	bool "Support gratuitous ARP requests/replies."
	depends on NET_ARP
	default y
	help
	  Gratuitous in this case means a ARP request or reply that is not
	  normally needed according to the ARP specification but could be used
	  in some cases. A gratuitous ARP request is a ARP request packet where
	  the source and destination IP are both set to the IP of the machine
	  issuing the packet and the destination MAC is the broadcast address
	  ff:ff:ff:ff:ff:ff. Ordinarily, no reply packet will occur.
	  A gratuitous ARP reply is a reply to which no request has been made.

if NET_ARP
module = NET_ARP
module-dep = NET_LOG
module-str = Log level for IPv4 ARP
module-help = Enables core ARP code to output debug messages.
source "subsys/net/Kconfig.template.log_config.net"
endif # NET_ARP

source "subsys/net/l2/ethernet/gptp/Kconfig"
source "subsys/net/l2/ethernet/lldp/Kconfig"

config NET_ETHERNET_BRIDGE
	bool "Ethernet Bridging support"
	select NET_PROMISCUOUS_MODE
	help
	  Enables Ethernet bridging where packets can be transparently
	  forwarded across interfaces registered to a bridge.

if NET_ETHERNET_BRIDGE
module = NET_ETHERNET_BRIDGE
module-dep = NET_LOG
module-str = Log level for Ethernet Bridging
module-help = Enables Ethernet Bridge code to output debug messages.
source "subsys/net/Kconfig.template.log_config.net"
endif # NET_ETHERNET_BRIDGE

config NET_ETHERNET_BRIDGE_SHELL
	bool "Ethernet Bridging management shell"
	depends on NET_ETHERNET_BRIDGE
	select SHELL
	help
	  Enables shell utility to manage bridge configuration interactively.

config NET_ETHERNET_BRIDGE_DEFAULT
	bool "Declare one bridge instance for shell usage"
	depends on NET_ETHERNET_BRIDGE_SHELL
	default y
	help
	  If the bridge shell is the sole user of the bridge code then
	  it needs at least one bridge instance to be useful.
	  Say y if this is the case. If you only want to inspect
	  existing bridge instances then say n.

config NET_ETHERNET_FORWARD_UNRECOGNISED_ETHERTYPE
	bool "Forward unrecognized EtherType frames further into net stack"
	default y if NET_SOCKETS_PACKET
	help
	  When enabled, the Ethernet L2 will forward even those frames for which
	  it does not recognize the EtherType in the header. By default, such
	  frames are dropped at the L2 processing.

endif # NET_L2_ETHERNET