On 7/20/20 9:57 AM, Murali Karicheri wrote:
> diff --git a/net/hsr/Kconfig b/net/hsr/Kconfig
> index 8095b034e76e..e2e396870230 100644
> --- a/net/hsr/Kconfig
> +++ b/net/hsr/Kconfig
> @@ -4,24 +4,35 @@
> #
>
> config HSR
> - tristate "High-availability Seamless Redundancy (HSR)"
> - help
> + tristate "High-availability Seamless Redundancy (HSR & PRP)"
> + ---help---
Just use:
help
The use of "---help---" has been discontinued.
> + This enables IEC 62439 defined High-availability Seamless
> + Redundancy (HSR) and Parallel Redundancy Protocol (PRP).
> +
> If you say Y here, then your Linux box will be able to act as a
> - DANH ("Doubly attached node implementing HSR"). For this to work,
> - your Linux box needs (at least) two physical Ethernet interfaces,
> - and it must be connected as a node in a ring network together with
> - other HSR capable nodes.
> + DANH ("Doubly attached node implementing HSR") or DANP ("Doubly
> + attached node implementing PRP"). For this to work, your Linux box
> + needs (at least) two physical Ethernet interfaces.
> +
> + For DANH, it must be connected as a node in a ring network together
> + with other HSR capable nodes. All Ethernet frames sent over the hsr
HSR
> + device will be sent in both directions on the ring (over both slave
> + ports), giving a redundant, instant fail-over network. Each HSR node
> + in the ring acts like a bridge for HSR frames, but filters frames
> + that have been forwarded earlier.
>
> - All Ethernet frames sent over the hsr device will be sent in both
> - directions on the ring (over both slave ports), giving a redundant,
> - instant fail-over network. Each HSR node in the ring acts like a
> - bridge for HSR frames, but filters frames that have been forwarded
> - earlier.
> + For DANP, it must be connected as a node connecting to two
> + separate networks over the two slave interfaces. Like HSR, Ethernet
> + frames sent over the prp device will be sent to both networks giving
PRP
> + a redundant, instant fail-over network. Unlike HSR, PRP networks
> + can have Singly Attached Nodes (SAN) such as PC, printer, bridges
> + etc and will be able to communicate with DANP nodes.
>
> This code is a "best effort" to comply with the HSR standard as
> described in IEC 62439-3:2010 (HSRv0) and IEC 62439-3:2012 (HSRv1),
> - but no compliancy tests have been made. Use iproute2 to select
> - the version you desire.
> + and PRP standard described in IEC 62439-4:2012 (PRP), but no
> + compliancy tests have been made. Use iproute2 to select the protocol
> + you would like to use.
>
> You need to perform any and all necessary tests yourself before
> relying on this code in a safety critical system!
thanks.
--
~Randy
