6986b1ef71
The legacy bridging code prevented normal IP traffic to the
bridged Ethernet interfaces. This is not intuitive and differs
how bridging setup works in Linux. This commit changes that and
creates a separate virtual interface that is doing the actual
bridging. This enables the bridged Ethernet interfaces to work
normally and provide IP connectivity.
How this works in practice:
* User needs to enable CONFIG_NET_ETHERNET_BRIDGE
* User needs to have a device with more than one Ethernet
interface
* After booting, the net-shell or program API can be used
to add interfaces to the bridge like this.
net bridge addif 1 3 2
where the 1 is the bridge interface index and
2 and 3 are the Ethernet interface indices.
* The bridging is then finally enabled / started when the
bridge interface 1 is taken up
net iface up 1
* If bridged interfaces are removed from the bridge (minimum
of two interfaces are needed there), then the bridging is
disabled automatically. The bridge interface stays up in
this case and can be taken down manually.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
157 lines
4.7 KiB
Plaintext
157 lines
4.7 KiB
Plaintext
# Copyright (c) 2018 Intel Corporation.
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# SPDX-License-Identifier: Apache-2.0
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menuconfig NET_L2_ETHERNET
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bool "Ethernet support"
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help
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Add support for Ethernet, enabling selecting relevant hardware drivers.
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If NET_SLIP_TAP is selected, NET_L2_ETHERNET will enable to fully
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simulate Ethernet through SLIP.
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if NET_L2_ETHERNET
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module = NET_L2_ETHERNET
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module-dep = NET_LOG
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module-str = Log level for Ethernet L2 layer
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module-help = Enables Ethernet L2 to output debug messages.
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source "subsys/net/Kconfig.template.log_config.net"
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config NET_L2_ETHERNET_MGMT
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bool "Ethernet network management interface"
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select NET_MGMT
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select NET_MGMT_EVENT
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help
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Enable support net_mgmt Ethernet interface which can be used to
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configure at run-time Ethernet drivers and L2 settings.
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config NET_VLAN
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bool "Virtual LAN support"
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select NET_L2_VIRTUAL
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help
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Enables virtual lan (VLAN) support for Ethernet.
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config NET_VLAN_COUNT
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int "Max VLAN tags supported in the system"
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default 1
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range 1 $(UINT8_MAX)
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depends on NET_VLAN
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help
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How many VLAN tags can be configured.
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config NET_VLAN_TXRX_DEBUG
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bool "Debug received and sent packets in VLAN"
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depends on NET_L2_ETHERNET_LOG_LEVEL_DBG && NET_VLAN
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help
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Enables printing of received and sent network packets.
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This can produce lot of output so it is disabled by default.
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config NET_ARP
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bool "ARP"
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default y
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depends on NET_IPV4
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help
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Enable ARP support. This is necessary on hardware that requires it to
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get IPv4 working (like Ethernet devices).
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config NET_ARP_TABLE_SIZE
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int "Number of entries in ARP table."
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depends on NET_ARP
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default 2
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help
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Each entry in the ARP table consumes 48 bytes of memory.
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config NET_ARP_GRATUITOUS
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bool "Support gratuitous ARP requests/replies."
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depends on NET_ARP
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default y
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help
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Gratuitous in this case means a ARP request or reply that is not
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normally needed according to the ARP specification but could be used
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in some cases. A gratuitous ARP request is a ARP request packet where
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the source and destination IP are both set to the IP of the machine
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issuing the packet and the destination MAC is the broadcast address
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ff:ff:ff:ff:ff:ff. Ordinarily, no reply packet will occur.
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A gratuitous ARP reply is a reply to which no request has been made.
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config NET_ARP_GRATUITOUS_TRANSMISSION
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bool "Transmit gratuitous ARP requests"
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depends on NET_ARP_GRATUITOUS
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depends on NET_MGMT_EVENT
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depends on NET_MGMT_EVENT_INFO
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help
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Transmit gratuitous ARP requests, as defined in RFC 5227.
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config NET_ARP_GRATUITOUS_INTERVAL
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int "Time interval (in seconds) between sending gratuitous ARP requests"
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depends on NET_ARP_GRATUITOUS_TRANSMISSION
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default 60
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if NET_ARP
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module = NET_ARP
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module-dep = NET_LOG
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module-str = Log level for IPv4 ARP
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module-help = Enables core ARP code to output debug messages.
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source "subsys/net/Kconfig.template.log_config.net"
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endif # NET_ARP
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source "subsys/net/l2/ethernet/gptp/Kconfig"
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source "subsys/net/l2/ethernet/lldp/Kconfig"
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config NET_ETHERNET_BRIDGE
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bool "Ethernet Bridging support"
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select NET_PROMISCUOUS_MODE
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select NET_L2_VIRTUAL
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help
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Enables Ethernet bridging where packets can be transparently
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forwarded across interfaces registered to a bridge.
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config NET_ETHERNET_BRIDGE_COUNT
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int "Max number of bridge interfaces"
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default 1
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range 1 16
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depends on NET_ETHERNET_BRIDGE
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help
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How many bridge interfaces are created. Each interface can bridge
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two or more Ethernet interfaces.
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config NET_ETHERNET_BRIDGE_ETH_INTERFACE_COUNT
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int "Max number of Ethernet interfaces bridged together"
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default 2
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range 2 32
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depends on NET_ETHERNET_BRIDGE
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help
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How many Ethernet interfaces can be bridged together per each
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bridge interface.
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if NET_ETHERNET_BRIDGE
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module = NET_ETHERNET_BRIDGE
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module-dep = NET_LOG
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module-str = Log level for Ethernet Bridging
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module-help = Enables Ethernet Bridge code to output debug messages.
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source "subsys/net/Kconfig.template.log_config.net"
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endif # NET_ETHERNET_BRIDGE
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config NET_ETHERNET_BRIDGE_TXRX_DEBUG
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bool "Debug received and sent packets in bridge"
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depends on NET_L2_ETHERNET_LOG_LEVEL_DBG && NET_ETHERNET_BRIDGE
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help
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Enables printing of received and sent network packets.
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This can produce lot of output so it is disabled by default.
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config NET_ETHERNET_BRIDGE_SHELL
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bool "Ethernet Bridging management shell"
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depends on NET_ETHERNET_BRIDGE
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select NET_SHELL
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help
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Enables shell utility to manage bridge configuration interactively.
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config NET_ETHERNET_FORWARD_UNRECOGNISED_ETHERTYPE
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bool "Forward unrecognized EtherType frames further into net stack"
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default y if NET_SOCKETS_PACKET
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help
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When enabled, the Ethernet L2 will forward even those frames for which
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it does not recognize the EtherType in the header. By default, such
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frames are dropped at the L2 processing.
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endif # NET_L2_ETHERNET
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