linux/net/bridge/Kconfig
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   1# SPDX-License-Identifier: GPL-2.0-only
   2#
   3# 802.1d Ethernet Bridging
   4#
   5
   6config BRIDGE
   7        tristate "802.1d Ethernet Bridging"
   8        select LLC
   9        select STP
  10        depends on IPV6 || IPV6=n
  11        help
  12          If you say Y here, then your Linux box will be able to act as an
  13          Ethernet bridge, which means that the different Ethernet segments it
  14          is connected to will appear as one Ethernet to the participants.
  15          Several such bridges can work together to create even larger
  16          networks of Ethernets using the IEEE 802.1 spanning tree algorithm.
  17          As this is a standard, Linux bridges will cooperate properly with
  18          other third party bridge products.
  19
  20          In order to use the Ethernet bridge, you'll need the bridge
  21          configuration tools; see <file:Documentation/networking/bridge.rst>
  22          for location. Please read the Bridge mini-HOWTO for more
  23          information.
  24
  25          If you enable iptables support along with the bridge support then you
  26          turn your bridge into a bridging IP firewall.
  27          iptables will then see the IP packets being bridged, so you need to
  28          take this into account when setting up your firewall rules.
  29          Enabling arptables support when bridging will let arptables see
  30          bridged ARP traffic in the arptables FORWARD chain.
  31
  32          To compile this code as a module, choose M here: the module
  33          will be called bridge.
  34
  35          If unsure, say N.
  36
  37config BRIDGE_IGMP_SNOOPING
  38        bool "IGMP/MLD snooping"
  39        depends on BRIDGE
  40        depends on INET
  41        default y
  42        help
  43          If you say Y here, then the Ethernet bridge will be able selectively
  44          forward multicast traffic based on IGMP/MLD traffic received from
  45          each port.
  46
  47          Say N to exclude this support and reduce the binary size.
  48
  49          If unsure, say Y.
  50
  51config BRIDGE_VLAN_FILTERING
  52        bool "VLAN filtering"
  53        depends on BRIDGE
  54        depends on VLAN_8021Q
  55        default n
  56        help
  57          If you say Y here, then the Ethernet bridge will be able selectively
  58          receive and forward traffic based on VLAN information in the packet
  59          any VLAN information configured on the bridge port or bridge device.
  60
  61          Say N to exclude this support and reduce the binary size.
  62
  63          If unsure, say Y.
  64
  65config BRIDGE_MRP
  66        bool "MRP protocol"
  67        depends on BRIDGE
  68        default n
  69        help
  70          If you say Y here, then the Ethernet bridge will be able to run MRP
  71          protocol to detect loops
  72
  73          Say N to exclude this support and reduce the binary size.
  74
  75          If unsure, say N.
  76
  77config BRIDGE_CFM
  78        bool "CFM protocol"
  79        depends on BRIDGE
  80        help
  81          If you say Y here, then the Ethernet bridge will be able to run CFM
  82          protocol according to 802.1Q section 12.14
  83
  84          Say N to exclude this support and reduce the binary size.
  85
  86          If unsure, say N.
  87