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