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ec8f24b7fa
Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# IEC 62439-3 High-availability Seamless Redundancy
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#
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config HSR
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tristate "High-availability Seamless Redundancy (HSR)"
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---help---
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If you say Y here, then your Linux box will be able to act as a
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DANH ("Doubly attached node implementing HSR"). For this to work,
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your Linux box needs (at least) two physical Ethernet interfaces,
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and it must be connected as a node in a ring network together with
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other HSR capable nodes.
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All Ethernet frames sent over the hsr device will be sent in both
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directions on the ring (over both slave ports), giving a redundant,
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instant fail-over network. Each HSR node in the ring acts like a
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bridge for HSR frames, but filters frames that have been forwarded
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earlier.
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This code is a "best effort" to comply with the HSR standard as
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described in IEC 62439-3:2010 (HSRv0) and IEC 62439-3:2012 (HSRv1),
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but no compliancy tests have been made. Use iproute2 to select
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the version you desire.
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You need to perform any and all necessary tests yourself before
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relying on this code in a safety critical system!
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If unsure, say N.
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