1 # SPDX-License-Identifier: GPL-2.0-only <<
2 # 1 #
3 # IEC 62439-3 High-availability Seamless Redun 2 # IEC 62439-3 High-availability Seamless Redundancy
4 # 3 #
5 4
6 config HSR 5 config HSR
7 tristate "High-availability Seamless R !! 6 tristate "High-availability Seamless Redundancy (HSR)"
8 help !! 7 ---help---
9 This enables IEC 62439 defined High- <<
10 Redundancy (HSR) and Parallel Redund <<
11 <<
12 If you say Y here, then your Linux b 8 If you say Y here, then your Linux box will be able to act as a
13 DANH ("Doubly attached node implemen !! 9 DANH ("Doubly attached node implementing HSR"). For this to work,
14 attached node implementing PRP"). Fo !! 10 your Linux box needs (at least) two physical Ethernet interfaces,
15 needs (at least) two physical Ethern !! 11 and it must be connected as a node in a ring network together with
16 !! 12 other HSR capable nodes.
17 For DANH, it must be connected as a <<
18 with other HSR capable nodes. All Et <<
19 device will be sent in both directio <<
20 ports), giving a redundant, instant <<
21 in the ring acts like a bridge for H <<
22 that have been forwarded earlier. <<
23 13
24 For DANP, it must be connected as a !! 14 All Ethernet frames sent over the hsr device will be sent in both
25 separate networks over the two slave !! 15 directions on the ring (over both slave ports), giving a redundant,
26 frames sent over the PRP device will !! 16 instant fail-over network. Each HSR node in the ring acts like a
27 a redundant, instant fail-over netwo !! 17 bridge for HSR frames, but filters frames that have been forwarded
28 can have Singly Attached Nodes (SAN) !! 18 earlier.
29 etc and will be able to communicate <<
30 19
31 This code is a "best effort" to comp 20 This code is a "best effort" to comply with the HSR standard as
32 described in IEC 62439-3:2010 (HSRv0 !! 21 described in IEC 62439-3:2010 (HSRv0), but no compliancy tests have
33 and PRP standard described in IEC 62 !! 22 been made.
34 compliancy tests have been made. Use <<
35 you would like to use. <<
36 23
37 You need to perform any and all nece 24 You need to perform any and all necessary tests yourself before
38 relying on this code in a safety cri 25 relying on this code in a safety critical system!
39 26
40 If unsure, say N. 27 If unsure, say N.
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