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Thomas Gleixnerec8f24b2019-05-19 13:07:45 +01001# SPDX-License-Identifier: GPL-2.0-only
Arvid Brodinf4214362013-10-30 21:10:47 +01002#
3# IEC 62439-3 High-availability Seamless Redundancy
4#
5
6config HSR
7 tristate "High-availability Seamless Redundancy (HSR)"
8 ---help---
9 If you say Y here, then your Linux box will be able to act as a
10 DANH ("Doubly attached node implementing HSR"). For this to work,
11 your Linux box needs (at least) two physical Ethernet interfaces,
12 and it must be connected as a node in a ring network together with
13 other HSR capable nodes.
14
15 All Ethernet frames sent over the hsr device will be sent in both
16 directions on the ring (over both slave ports), giving a redundant,
17 instant fail-over network. Each HSR node in the ring acts like a
18 bridge for HSR frames, but filters frames that have been forwarded
19 earlier.
20
21 This code is a "best effort" to comply with the HSR standard as
Peter Heiseee1c2792016-04-13 13:52:22 +020022 described in IEC 62439-3:2010 (HSRv0) and IEC 62439-3:2012 (HSRv1),
23 but no compliancy tests have been made. Use iproute2 to select
24 the version you desire.
Arvid Brodinf4214362013-10-30 21:10:47 +010025
26 You need to perform any and all necessary tests yourself before
27 relying on this code in a safety critical system!
28
29 If unsure, say N.